„The continuing value of the Apgar score for the assessment of newborn infants”. The New England Journal of Medicine. 344 (7): 467–71. februarie 2001. doi:10.1056/NEJM200102153440701. PMID11172187.
„The continuing value of the Apgar score for the assessment of newborn infants”. The New England Journal of Medicine. 344 (7): 467–71. februarie 2001. doi:10.1056/NEJM200102153440701. PMID11172187.