Khonkaen univercity, Khonkaen, Thailand
Khon Kaen Hospital, Muang Khon Kaen, Khon Kaen, Thailand
Research Center in Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University, Muang, Khon Kaen, Thailand
Faculty of Associated Medical Sciences, Khon Kaen University, Muang Khon Kaen, Khon Kaen, Thailand
Jitanaporn Wattanathorn, Khon Kaen, Thailand
Sujittra Kluayhomthong, Khon Kaen, Thailand
Eye outpatients department, Srinagarind Hospital, Khon Kaen University, Khon Kaen, Thailand
Khon Kaen University, Maung, Khon Kaen, Thailand
Ubon Ratchathani Cancer Hospital, Ubon Ratchathani, Thailand