PREVALENCE OF VITAMIN D DEFICIENCY AMONG THE PATIENTS PRESENTING WITH CHRONIC FATIGUE. Frontier in Medical and Health Research, [S. l.], v. 3, n. 5, p. 1493–1496, 2025. Disponível em: https://fmhr.net/index.php/fmhr/article/view/694.. Acesso em: 27 apr. 2026.