Prenatal risk factors for neonatal asphyxia: how risk for each?
CHEN Zi-Li, HE Rui-Zhi, PENG Qian, GUO Ke-Yu, ZHANG Yu-Qiong, YUAN Hui-Hua, LIU Jian-Xin
中国当代儿科杂志 . 2009, (03): 161 -165 .