7[1]Pinelli J,Atkinson SA,Saigals.Randomized trial of breastfeeding support in very low birth weight infant [J].Arch Pedatric Adolesc Med,2001,155:548-553.
8[2]Sagraves CM,et al.Drugs in breast milk: A scientific explanation[J].Journal of Pediatric Health Care,1997,11:230-232.
9[3]Department of Health and Human Services.HHB Blueprint for Action on Breastfeeding[M].Washington DC: US Dept of Health and Human Services,2000,16-18.
10[4]Crowell MK,et al.Relationship between obstetric analgesia and time of effective breastfeeding[J].Journal of Nurse Midewifery,1997,39:150-156.
