Sritipsukho, Paskorn, Orapan Poachanukoon, Sira Nanthapisal, Prapasri Kulalert, and Sukkrawan Intarakhao. “Vitamin D Insufficiency and Atopy in Asthmatic Children at Thammasat University Hospital”. Science & Technology Asia 27, no. 1 (March 28, 2022): 155–159. Accessed July 6, 2022. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/221712.