Huai Heng LohQuan Hziung LimWaye Hann KangAnne YeeMei Ching YongNorlela Sukor2024-10-172024-10-172023-09-1410.1007/s42000-023-00481-3https://dspace-cris.utar.edu.my/handle/123456789/3158Obstructive sleep apnea and vitamin D: an updated systematic review and meta-analysisjournal-article