อุทัย, นุชจรี; Buddhachinaraj Phitsanulok Hospital2011-03-102011-03-102011-03-102011-03-10Buddhachinaraj Medical Journal; Vol.27 (Supplement 1) May-Augst 2010; 408http://imsear.searo.who.int/handle/123456789/134407no abstracten-USBuddhist Hospital, Phitsanulok, ThailandSpecial Article