Silaporn, Patummal, Mayurachat Biaklang, and Aschara Thukrua. 2018. “Active Surveillance of Diseases and Health Hazard Among Thai Pilgrims Returning from Hajj, 2013”. Journal of Health Science of Thailand 27 (2):243-52. https://thaidj.org/index.php/JHS/article/view/2812.