title: Vitamin D as an underlying factor in sleep-related issues.
authors.affiliation: Departamento de Psicobiologia-Universidade Federal de São Paulo, São Paulo, Brazil. ml.andersen12@gmail.com
authors.forename: Monica Levy
authors.initials: ML
authors.lastname: Andersen
authors.forename: Sergio
authors.initials: S
authors.lastname: Tufik
mesh_terms: D001741:Black or African American; D006970:Disorders of Excessive Somnolence / Q000208:ethnology*; D005260:Female; D006801:Humans; D008297:Male; D014808:Vitamin D Deficiency / Q000208:ethnology*