Thammathorn B, Nakawiro D. Prevalence of vitamin D deficiency in Thai dementia patients in Ramathibodi Hospital. J Psychiatr Assoc Thailand [internet]. 2023 Jun. 29 [cited 2026 Oct. 9];68(2):173-80. available from: https://he01.tci-thaijo.org/index.php/JPAT/article/view/261005