5 1 50 The Indonesian Journal Of Pediatrics and Perinatal Medicine), Vol.41(1-2) The Indonesian Society Of Pediatricians Primary Author mixed material 00309311 Jakarta The Indonesian Society Of Pediatricians 2001 The Indonesian Journal Of Pediatrics and Perinatal Medicine), Vol.41(3-4) The Indonesian Society Of Pediatricians Primary Author mixed material 00309311 Jakarta The Indonesian Society Of Pediatricians 2001 The Indonesian Journal Of Pediatrics and Perinatal Medicine), Vol.41(5-6) The Indonesian Society Of Pediatricians Primary Author mixed material 00309311 Jakarta The Indonesian Society Of Pediatricians 2001 The Indonesian Journal Of Pediatrics and Perinatal Medicine), Vol.41(7-8) The Indonesian Society Of Pediatricians Primary Author mixed material 00309311 Jakarta The Indonesian Society Of Pediatricians 2001 The Indonesian Journal Of Pediatrics and Perinatal Medicine), Vol.42(7-8) The Indonesian Society Of Pediatricians Primary Author mixed material 00309311 Jakarta The Indonesian Society Of Pediatricians 2002