Kittipong Kongsomboon. (2005) Comparable health risk factors between doctors and other personnels at HRH Princess Maha Chakri Sirindhorn Medical Center, Ongkharak district, Nakorn-nayok province. <i>Journal of Medicine and Health Sciences</i>, <i>12</i>(3), 86-93.Kittipong Kongsomboon. "Comparable health risk factors between doctors and other personnels at HRH Princess Maha Chakri Sirindhorn Medical Center, Ongkharak district, Nakorn-nayok province". Journal of Medicine and Health Sciences 12 (2005):86-93.Kittipong Kongsomboon. Comparable health risk factors between doctors and other personnels at HRH Princess Maha Chakri Sirindhorn Medical Center, Ongkharak district, Nakorn-nayok province. Faculty of Medicine,Srinakharinwirot University:ม.ป.ท. 2005.