title: Comments on the paper by Willumsen et al. (1997)
authors.forename: F J
authors.initials: FJ
authors.lastname: Rosales
mesh_terms: D000210:Acute-Phase Reaction / Q000378:metabolism / Q000503:physiopathology*; D002675:Child, Preschool; D004848:Epithelium / Q000503:physiopathology; D006801:Humans; D007223:Infant; D012137:Respiratory System / Q000503:physiopathology*; D013019:South Africa; D014801:Vitamin A / Q000378:metabolism*
chemical_list: D014801:Vitamin A