human 82 Humans 61 Article 56 female 48 male 43 adult 39 Female 36 controlled study 34 Male 30 Adult 28 major clinical study 21 nonhuman 21 child 16 acquired immune deficiency syndrome 15 adolescent 14 clinical article 14 complication 14 middle aged 14 vitamin D deficiency 14 Human immunodeficiency virus infection 13 Middle Aged 12 case report 12 genetics 12 metabolism 12 vitamin D 12 follow up 11 pathology 11 young adult 11 Adolescent 10 COVID-19 10