262
Participants
Start Date
August 1, 2015
Primary Completion Date
December 31, 2017
Study Completion Date
December 31, 2017
Vitamin A
Vitamin A daily dose 1500IU/day will be added to infant's enteral feeds in drop form as soon as minimal feeding is introduced. The vitamin A supplementation was last for 28 days.
Zhengzhou Children's Hospital, Zhengzhou
Zhengzhou University
OTHER
Huiqing Sun
OTHER