Majeed-Ariss R, Hall AG, McDonagh J, et al. Mobile Phone and Tablet Apps to Support Young People’s Management of Their Physical Long-Term Conditions: A Systematic Review Protocol. JMIR Res Protoc 2015; 4: e40.
 Abejirinde IOO, Ilozumba O, Marchal B, et al. Mobile health and the performance of maternal health care workers in low- and middle-income countries: A realist review. Int J Care Coord 2018; 21: 73–86.
 Akter S, Ray P. mHealth - an Ultimate Platform to Serve the Unserved. Yearb Med Inform 2018; 19: 94–100.
 Ruton H, Musabyimana A, Gaju E, et al. The impact of an mHealth monitoring system on health care utilization by mothers and children: An evaluation using routine health information in Rwanda. Health Policy Plan 2018; 33: 920–927.
 Martínez-Pérez B, De La Torre-Díez I, López-Coronado M. Mobile health applications for the most prevalent conditions by the world health organization: Review and analysis. J Med Internet Res; 15. Epub ahead of print 2013. DOI: 10.2196/jmir.2600.
 Sondaal S, Browne JL, Amoakoh-coleman M, et al. Assessing the Effect of mHealth Interventions in Improving Maternal and Neonatal Care in Low- and Middle-Income Countries : A Systematic Review. PLoS One 2016; 11: 1–26.
 Feroz A, Perveen S, Aftab W. Role of mHealth applications for improving antenatal and postnatal care in low and middle income countries: A systematic review. BMC Health Serv Res 2017; 17: 704.
 Mbuthia F, Reid M, Fichardt A. MHealth communication to strengthen postnatal care in rural areas: A systematic review. BMC Pregnancy Childbirth 2019; 19: 1–10.
 Manyati T. A systematic review of the factors that hinder the scale up of mobile health technologies in antenatal care programmes in sub-Saharan Africa. African J Sci Technol Innov Dev. Epub ahead of print 2020. DOI: 10.1080/20421338.2020.1765479.
 Feroz A, Perveen S, Aftab W. Role of mHealth applications for improving antenatal and postnatal care in low and middle income countries: A systematic review. BMC Health Serv Res 2017; 17: 1–11.
 Amoakoh-Coleman M, Borgstein ABJ, Sondaal SFV, et al. Effectiveness of mHealth interventions targeting health care workers to improve pregnancy outcomes in low- and middle-income countries: A systematic review. J Med Internet Res; 18. Epub ahead of print 2016. DOI: 10.2196/jmir.5533.
 Sondaal SFV, Browne JL, Amoakoh-Coleman M, et al. Assessing the Effect of mHealth Interventions in Improving Maternal and Neonatal Care in Low- and Middle-Income Countries: A Systematic Review. PLoS One 2016; 11: e0154664.
 Colaci D, Chaudhri S, Vasan A. mHealth Interventions in Low-Income Countries to Address Maternal Health: A Systematic Review. Ann Glob Heal 2016; 82: 922–935.
 Obasola OI, Mabawonku IM. Women’s use of information and communication technology in accessing maternal and child health information in Nigeria. African J Libr Arch Inf Sci 2017; 27: 1–15.
 Hackett K., C. L, P. N, et al. Impact of smartphone-assisted prenatal home visits on women’s use of facility delivery: Results from a cluster-randomized trial in rural Tanzania. PLoS One 2018; 13: e0199400.
 Kabongo EM, Mukumbang FC, Delobelle P, et al. Understanding the influence of the MomConnect programme on antenatal and postnatal care service utilisation in two South African provinces: A realist evaluation protocol. BMJ Open 2019; 9: 1–9.
 Mukumbang FC, Van Belle S, Marchal B, et al. Realist evaluation of the antiretroviral treatment adherence club programme in selected primary healthcare facilities in the metropolitan area of Western Cape Province, South Africa: a study protocol. BMJ Open 2016; 6: e009977-88.
 Pawson R, Tilley N. Realistic evaluation. Sage, 1997.
 Dalkin SM, Greenhalgh J, Jones D, et al. What ’ s in a mechanism ? Development of a key concept in realist evaluation. Implement Sci 2015; 10: 49.
 Mukumbang FC, Marchal B, Belle S Van, et al. A realist approach to eliciting the initial programme theory of the antiretroviral treatment adherence club intervention in the Western Cape Province , South Africa. BMC Med Res Methodol 2018; 18: 47.
 Marchal B, van Belle BTC S, Josefien van Olmen B, et al. Is realist evaluation keeping its promise? A review of published empirical studies in the field of health systems research review of realist evaluations in health systems researchEvaluation. Evaluation 2012; 18: 192–212.
 Mukumbang FC, Van Wyk B, Van Belle S, et al. Unravelling how and why the Antiretroviral Adherence Club Intervention works (or not) in a public health facility: A realist explanatory theory-building case study. PLoS One 2019; 14: 1–26.
 Mukumbang, Ferdinand C, Brian van Wyk, Sara van Wyk BM. ‘ At this [ adherence ] club , we are a family now ’: A realist theory-testing case study of the antiretroviral treatment adherence club , South Africa. South Afr J HIV Med 2015; 20: 1–14.
 Pawson R, Greenhalgh T, Harvey G, et al. Realist Synthesis : An Introduction. Manchester ESRC Res Methods Program Univ Manchester; August 200.
 Petticrew M, Roberts H. Systematic reviews in the social sciences : a practical guide. Blackwell Pub, https://books.google.co.za/books?hl=en&lr=&id=ZwZ1_xU3E80C&oi=fnd&pg=PR5&dq=Systematic+review+in+social+science:+a+practical+guide+oxford:+Blackwell+Publication+2006&ots=wYUZxMMXOu&sig=ShsUx4Q8RNc0zT2Ff5SRCfHdFRI&redir_esc=y#v=onepage&q=Systematic review in social science%3A a practical guide oxford%3A Blackwell Publication 2006&f=false (2006, accessed 14 June 2019).
 Popay J, Roberts H, Sowden A, et al. Guidance on the conduct of narrative synthesis in systematic reviews : A product from the ESRC Methods Programme Guidance on the Conduct of Narrative Synthesis in Systematic Reviews A Product from the ESRC Methods Programme with. Epub ahead of print 2006. DOI: 10.13140/2.1.1018.4643.
 Mukumbang FC, Van Belle S, Marchal B, et al. An exploration of group-based HIV/AIDS treatment and care models in Sub-Saharan Africa using a realist evaluation (Intervention-Context-Actor-Mechanism-Outcome) heuristic tool: A systematic review. Implement Sci 2017; 12: 107.
 Arai L, Britten N, Popay J, et al. Testing methodological developments in the conduct of narrative synthesis: A demonstration review of research on the implementation of smoke alarm interventions. Evid Policy 2007; 3: 361–383.
 Peters DH. The application of systems thinking in health: why use systems thinking? Heal Rearch Policy Syst 2014; 12: 51.
 Eastwood JG, Jalaludin BB, Kemp LA. Realist explanatory theory building method for social epidemiology : a protocol for a mixed method multilevel study of neighbourhood context and postnatal depression. Springer Plus 2014; 3: 12.
 Doi L, Jepson R, Cheyne H. A realist evaluation of an antenatal programme to change drinking behaviour of pregnant women. Midwifery 2015; 31: 965–972.
 Marchal B, van Belle S, van Olmen J, et al. Is realist evaluation keeping its promise? A review of published empirical studies in the field of health systems research. Evaluation 2012; 18: 192–212.
 Wong G, Westhorp G, Manzano A, et al. RAMESES II reporting standards for realist evaluations. BMC Med 2016; 14: 96–114.
 Pawson R, Barnes C, Boaz A, et al. ESRC UK Centre for Evidence Based Policy and Practice: Working Paper 17 Types and quality of social care knowledge Stage one: a classification of types of social care knowledge The SCIE project. ESRC UK Cent Evid Based Policy Pract; 18.
 Kaewkungwal J, Singhasivanon P, Khamsiriwatchara A, et al. Application of smart phone in ‘ Better Border Healthcare Program’: A module for mother and child care. BMC Med Inform Decis Mak 2010; 10: 69–81.
 Ngabo F, Nguimfack J, Nwaigwe F, et al. Designing and Implementing an Innovative SMS-based alert system (RapidSMS-MCH) to monitor pregnancy and reduce maternal and child deaths in Rwanda. Pan Afr Med J 2012; 13: 15.
 Bigna JJR, Jacques J, Noubiap N, et al. Eff ect of mobile phone reminders on follow-up medical care of children exposed to or infected with HIV in Cameroon (MORE CARE): a multicentre, single-blind, factorial, randomised controlled trial. Lancet Infect Dis 2014; 14: 600–608.
 Ayiasi RM, Atuyambe LM, Kiguli J, et al. Use of mobile phone consultations during home visits by Community Health Workers for maternal and newborn care: Community experiences from Masindi and Kiryandongo districts, Uganda. BMC Public Health 2015; 15: 1–14.
 Modi D, Gopalan R, Shah S, et al. Development and formative evaluation of an innovative mHealth intervention for improving coverage of community-based maternal, newborn and child health services in rural areas of India. Glob Health Action 2015; 8: 26769.
 Kaphle S, Chaturvedi S, Chaudhuri I, et al. Adoption and Usage of mHealth Technology on Quality and Experience of Care Provided by Frontline Workers: Observations From Rural India. JMIR mHealth uHealth 2015; 3: e61.
 Tobe RG, Haque SE, Ikegami K, et al. Mobile-health tool to improve maternal and neonatal health care in Bangladesh: A cluster randomized controlled trial. BMC Pregnancy Childbirth 2018; 18: 1–7.
 Ilozumba O, Dieleman M, Kraamwinkel N, et al. ‘I am not telling. the mobile is telling’: Factors influencing the outcomes of a community health worker mHealth intervention in India. PLoS One 2018; 13: 1–24.
 Kaewkungwal J. SP. KA. SS. MP. WA, Kaewkungwal J, Singhasivanon P, et al. Application of smart phone in ‘Better Border Healthcare Program’: a module for mother and child care. BMC Med Inform Decis Mak 2010; 10: 69.
 Shiferaw S, Spigt M, Tekie M, et al. The effects of a locally developed mHealth intervention on delivery and postnatal care utilization; A prospective controlled evaluation among health centres in Ethiopia. PLoS One 2016; 11: 1–15.
 Asiki G, Newton R, Kibirige L, et al. Feasibility of using smartphones by village health workers for pregnancy registration and effectiveness of mobile phone text messages on reduction of homebirths in rural Uganda. PLoS One 2018; 13: 1–14.
 Mwendwa P. Assessing the fit of RapidSMS for maternal and new-born health: perspectives of community health workers in rural Rwanda. Dev Pract 2016; 26: 38–51.
 Hackett KM, Kazemi M, Sellen DW. Keeping secrets in the cloud: Mobile phones, data security and privacy within the context of pregnancy and childbirth in Tanzania. Soc Sci Med 2018; 211: 190–197.
 Abejirinde IOO, Douwes R, Bardají A, et al. Pregnant women’s experiences with an integrated diagnostic and decision support device for antenatal care in Ghana. BMC Pregnancy Childbirth 2018; 18: 1–11.
 Atnafu A, Otto K, Herbst CH. The role of mHealth intervention on maternal and child health service delivery: findings from a randomized controlled field trial in rural Ethiopia. mHealth 2017; 3: 39–39.
 Martinez B, Ixen EC, Hall-Clifford R, et al. MHealth intervention to improve the continuum of maternal and perinatal care in rural Guatemala: A pragmatic, randomized controlled feasibility trial. Reprod Health 2018; 15: 1–12.
 Nie J, Unger JA, Thompson S, et al. Does mobile phone ownership predict better utilization of maternal and newborn health services? A cross-sectional study in Timor-Leste. BMC Pregnancy Childbirth 2016; 16: 1–7.
 Kazi AM, Carmichael J-L, Hapanna GW, et al. Assessing Mobile Phone Access and Perceptions for Texting-Based mHealth Interventions Among Expectant Mothers and Child Caregivers in Remote Regions of Northern Kenya: A Survey-Based Descriptive Study. JMIR Public Heal Surveill 2017; 3: e5.
 Coleman J, Bohlin KC, Thorson A, et al. Effectiveness of an SMS-based maternal mHealth intervention to improve clinical outcomes of HIV-positive pregnant women. AIDS Care - Psychol Socio-Medical Asp AIDS/HIV 2017; 29: 890–897.
 Bangal VB, Borawake SK, Gavhane SP, et al. Use of mobile phone for improvement in maternal health : a randomized control trial. Int J Reprod Contraception, Obstet Gynecol 2017; 6: 5458–5463.
 Skinner D, Delobelle P, Pappin M, et al. User assessments and the use of information from MomConnect , a mobile phone text-based information service , by pregnant women and new mothers in South Africa. BMJ Glob Heal 2018; 3: e000561.
 Barron P, Peter J, LeFevre AE, et al. Mobile health messaging service and helpdesk for South African mothers (MomConnect): history, successes and challenges. BMJ Glob Heal 2018; 3: e000559.
 Abekah-Nkrumah G, Guerriero M, Purohit P. ICTs and maternal healthcare utilization. Evidence from Ghana. Int J Soc Econ 2014; 41: 518–541.
 Jennings L, Omoni A, Akerele A, et al. Disparities in mobile phone access and maternal health service utilization in Nigeria: A population-based survey. Int J Med Inform 2015; 84: 341–348.
 McNabb M, Chukwu E, Ojo O, et al. Assessment of the quality of antenatal care services provided by health workers using a mobile phone decision support application in northern Nigeria: A pre/post-intervention study. PLoS One 2015; 10: 1–12.
 Balakrishnan R, Gopichandran V, Chaturvedi S, et al. Continuum of Care Services for Maternal and Child Health using mobile technology - a health system strengthening strategy in low and middle income countries. BMC Med Inform Decis Mak 2016; 16: 1–8.
 Guerra-Reyes L, Christie VM, Prabhakar A, et al. Postpartum Health Information Seeking Using Mobile Phones: Experiences of Low-Income Mothers. Matern Child Health J 2016; 20: 13–21.
 Nyemba-Mudenda M, Chigona W. mHealth outcomes for pregnant mothers in Malawi: a capability perspective. Inf Technol Dev 2018; 24: 245–278.
 Feroz A, Rizvi N, Sayani S, et al. Feasibility of mHealth intervention to improve uptake of antenatal and postnatal care services in peri-urban areas of Karachi: a qualitative exploratory study. J Hosp Manag Heal Policy 2017; 1: 5–5.
 Musabyimana A, Ruton H, Gaju E, et al. Tugas Translate Jurnal Assessing the Perspectives of Users and Beneficiaries of a Community Health Worker Mhealth Tracking System for Mothers and Children in Rwanda Pekerja Kesehatan Masyarakat Sistem Pelacakan Mhealth Untuk Ibu Dan Anak-Anak Di Rwanda Pe. 2018; 10: 1–13.
 Gagnon MP, Ngangue P, Payne-Gagnon J, et al. M-Health adoption by healthcare professionals: A systematic review. J Am Med Informatics Assoc 2016; 23: 212–220.
 Azhar FA Bin, Dhillon JS. A systematic review of factors influencing the effective use of mHealth apps for self-care. 2016 3rd Int Conf Comput Inf Sci ICCOINS 2016 - Proc 2016; 191–196.
 Akter S, D’Ambra J, Ray P. User perceived services quality of mHealth Services around the world. 18 th Eur Conf Inf Syst Pretoria, South Africa 2010; 1–12.
 Kabongo EM, Mukumbang F, Peter N, Delobelle A, Edward N, Nicol. Combining the Theory of Change and Realist Evaluation Approaches to elicit an initial program theory of the MomConnect program in South Africa. BMC Medical research methodology 2020; 1-22
 Fogg BJ. Fogg-persuasive behavior. A Behav Model Persuas Des 2009; 7.
 Goodhue DL, Thompson RL. Task-Technology Fit and Individual Performance. MIS Q 1995; 19: 213.
 Davis FD. Perceived Usefulness, Perceived Ease of Use, and User Acceptance of Information Technology. MIS Q 1989; 13: 319.
 Bull S, Ezeanochie N. From Foucault to Freire Through Facebook: Toward an Integrated Theory of mHealth. Heal Educ Behav 2016; 43: 399–411.
 Pawson R, Tilley N. Realistic evaluation. Sage Publ 2004; 1–36.
 Mukumbang FC, Marchal B, Belle S Van, et al. Unearthing how , why , for whom and under what health system conditions the antiretroviral treatment adherence club intervention in South Africa works : A realist theory refining approach. BMJ Glob 2018; 18: 343.
 Yamin F, Kaewkungwal J, Singhasivanon P, et al. Women’s perceptions of using mobile phones for maternal and child health support in Afghanistan: Cross-sectional survey. J Med Internet Res 2018; 20: 1–10.