CONTENTS OF VITAMIN A IN MATERNAL PLASMA, UMBILICAL CORD PLASMA AND HUMAN MILK IN THREE CITIES OF NORTHERN CHINA
YIN Huan-huan, TIAN Luo-jia, ZHAO Yan-rong, LI Xiang, MAO Ying-yi, CHEN Jin-yao
Acta Nutrimenta Sinica . 2025, (2): 119 -124 .