title: Questionable techniques for evaluating photodamage.
authors.forename: Ernst
authors.initials: E
authors.lastname: Epstein
mesh_terms: D000287:Administration, Topical; D006801:Humans; D009539:Nicotinic Acids / Q000008:administration & dosage*; D009824:Ointments; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D015595:Skin Aging / Q000187:drug effects*; D014466:Ultraviolet Rays / Q000009:adverse effects*; D012176:Retinoids
chemical_list: D009539:Nicotinic Acids; D009824:Ointments; C086827:tazarotene; D012176:Retinoids