CJCP     2021 23 (7):  702-706    ISSN: 1008-8830  CN: 43-1301/R Association between time of birth and resuscitation outcomes in extremely preterm infants WANG Qing-Qing, XU Jing, XIAO Xiang, PIAO Mei-Hua, HAN Tong-Yan Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China Received: 2021-04-08  Revised: 2021-05-13  Online: null Supporting info