CJCP     2021 23 (1):  31-36    ISSN: 1008-8830  CN: 43-1301/R Clinical effect of an additional maintenance dose of caffeine before ventilator weaning in preterm infants with respiratory distress syndrome: a prospective randomized controlled trial YAO Ling-Song, LIN Xin-Zhu, HUANG Jing, TANG Li-Xia Department of Neonatology, Women and Children's Hospital, School of Medcine, Xiamen University/Xiamen Key Laboratory of Perinatal-Neonatal Infection, Xiamen, Fujian 361003, China Received: 2020-08-08  Revised: 2020-11-10  Online: null Supporting info