Comparison of the efficacy of domestic and imported caffeine citrate in the treatment of apnea in preterm infants: a prospective randomized double-blind controlled trial
HE Ting, LIAO Zheng-Chang, DING Ying, WANG Ming-Jie, LI Wen, GAN Ji-Min, YUE Shao-Jie
CJCP . 2020, (7): 684 -689 .  DOI: 10.7499/j.issn.1008-8830.2003276