TY - JOUR T1 - Answer: Can you identify this condition? JF - Canadian Family Physician JO - Can Fam Physician SP - 538 LP - 539 VL - 58 IS - 5 AU - Yu-Wen Yeh AU - Yu-Fei Chen AU - Bai-Yao Wu Y1 - 2012/05/01 UR - http://www.cfp.ca/content/58/5/538.abstract N2 - ER -