deCarvalho M, Anderson DM, Giangreco A, Pittard WB (May 1985). "Frequency of milk expression and milk production by mothers of nonnursing premature neonates". American Journal of Diseases of Children. 139 (5): 483–485. doi:10.1001/archpedi.1985.02140070057033. PMID3984973.
deCarvalho M, Anderson DM, Giangreco A, Pittard WB (May 1985). "Frequency of milk expression and milk production by mothers of nonnursing premature neonates". American Journal of Diseases of Children. 139 (5): 483–485. doi:10.1001/archpedi.1985.02140070057033. PMID3984973.