3He M, Ma J, Chen Q et al. Growth and feeding practices of 4 and 8 month infants in southern China -J3 . Nutri Res, 2001, 21 : 103.
4Li Y, Kong L, Hotta Met al. Breast - feeding in Bangkok, Thailand : current status, maternal knowledge, attitude and social support [J] . Pediatr Int, 1999, 41 (6) : 648.
5Bicego GT, Doerma JT. Maternal education and infant survival: a comparative study of survey data from 17 countries [ J] . Soc Sci Med, 1993, 36:1207.