Objective: Apnea of prematurity (AOP) is defined as an attack of apnea for at least 20 seconds, with bradycardia and cyanosis. It is a common phenomenon in the neonatal intensive care unit (NICU). Caffeine citrate, one of the methylxanthines, is used to suppress or to prevent AOP attack. This study aimed to develop a population pharmacokinetic (popPK) […]