title: Letter: The safety of psoralens.
mesh_terms: D000328:Adult; D003374:Coumarins / Q000009:adverse effects*; D006801:Humans; D008297:Male; D010787:Photosensitivity Disorders / Q000139:chemically induced*; D010858:Pigmentation / Q000187:drug effects; D013471:Sunburn; D014307:Trioxsalen / Q000009:adverse effects*
chemical_list: D003374:Coumarins; D014307:Trioxsalen