Implementing digital health transformation policies in Latin America: insights from four national case studies - Paola Abril Campos Rivera; Pablo Villalobos Dintrans; Berenice Alfaro-Ponce; Beatriz Michelle Ramírez Pérez; Daniel Choperena; Adolfo Rubinstein; Cintia Cejas; Felix Liberona; Michael R. Reich (npj Digital Medicine, 2026)