Supon Limwatananon. (1991) The decision to use Health care services in Khon Kaen hospital. Mahidol University,:ม.ป.ท.Supon Limwatananon. 1991. The decision to use Health care services in Khon Kaen hospital. ม.ป.ท.:Mahidol University,;Supon Limwatananon. The decision to use Health care services in Khon Kaen hospital. ม.ป.ท.:Mahidol University, 1991. Print.