-- --; Buddhachinaraj Phitsanulok Hospital2011-02-162011-02-162009-01-162009-01-16Buddhachinaraj Medical Journal; Vol.26 No.3 September-December 2009; 328-337http://imsear.searo.who.int/handle/123456789/130161no abstracten-USBuddhachinaraj Medical JournalIndex