TY - JOUR T1 - Use of 13-cis-retinoic acid in cystic acne JF - Canadian Medical Association Journal JO - CMAJ SP - 224 LP - 224 VL - 129 IS - 3 AU - N. Kanigsberg AU - J. P. DesGroseilliers Y1 - 1983/08/01 UR - http://www.cmaj.ca/content/129/3/224.abstract ER -