Teeratananon, T., Tangjitgamol, S., Duangduen, Y. and Ativanichayapong, N. (2024) “Vitamin D Level of Individuals Having Medical Service in a Tertiary Hospital: Vitamin D Level of Individuals in the Hospital”, Vajira Medical Journal : Journal of Urban Medicine, 69(1), p. e269874. doi: 10.62691/vmj.2024.269874.