RT Journal Article SR Electronic T1 Chronic urticaria as the first sign of sarcoidosis JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 546 OP 547 VO 60 IS 6 A1 María Socorro Pérez Bustamante A1 Jose Barbarroja-Escudero A1 Darío Antolín-Amérigo A1 María José Sánchez-González A1 Mercedes Rodríguez-Rodríguez A1 Melchor Alvarez-Mon YR 2014 UL http://www.cfp.ca/content/60/6/546.abstract AB