Automated phone call and text reminders for childhood immunisations (PRIMM): a randomised controlled trial in Nigeria.
Osayame Austine EkhaguereRosena O OluwafemiBolaji BadejokoLawal O OyeneyinAzeez ButaliElizabeth D LowenthalAndrew P SteenhoffPublished in: BMJ global health (2019)
NCT02819895.