Yotsanon Sikkhajan และ Wandee Sirichokchatchawan. (2018) Delay in health seeking behavior among tb patients in Chiang Rai province, Thailand. Chulalongkorn University:ม.ป.ท.Yotsanon Sikkhajan และ Wandee Sirichokchatchawan. 2018. Delay in health seeking behavior among tb patients in Chiang Rai province, Thailand. ม.ป.ท.:Chulalongkorn University;Yotsanon Sikkhajan และ Wandee Sirichokchatchawan. Delay in health seeking behavior among tb patients in Chiang Rai province, Thailand. ม.ป.ท.:Chulalongkorn University, 2018. Print.