D. Hernandez-Galdamez,K. Mansilla,A. L. Peralta,J. Rodriguez-Szaszdi,J. M. Ramirez,D. Roche,P. Gulayin,M. Ramirez-Zea,J. He,V. Irazola and M. P. Fort. Monitoring Study Participants and Implementation with Phone Calls to Support Hypertension Control During the COVID-19 Pandemic: The Case of a Multicomponent Intervention Trial in Guatemala. Global Heart. 2021;16(1):10.5334/gh.954.