The timing of withdrawal from caffeine citrate in very preterm infants
ZHANG Xue-Fei, HE Xiao-Ri, LI Wen, WANG Tao, HU Jin-Tao, DONG Qing-Yi, CHEN Ping-Yang
CJCP . 2021, (12): 1228 -1233 .  DOI: 10.7499/j.issn.1008-8830.2108186