6Jadcherla SR,Duong HQ,Hofmann C,et al.Characteristics of upper oesophageal sphincter and oesophageal body during maturation in healthy human fioonates compared with adults.Neurogastroenterol Motil,2005,17(5):663-670.
7Costalos C,Gounaris A,Varhalama E,et al.Erythromycin as a prokinetie agent in preterm infants.J peoiatr Gastroenterol Nutr,2002,34(1):23-25.