共 34 条
[24]
Nelson K. B., 2000, American Journal of Obstetrics and Gynecology, V182, pS47
[25]
Nelson Karin B., 1999, Current Opinion in Pediatrics, V11, P487, DOI 10.1097/00008480-199912000-00002
[29]
Sävman K, 1998, PEDIATR RES, V43, P746