Chen, YHChen, HC2020-04-102020-04-102018-12Chen YH, Chen HC. Comb sign in a patient with ankylosing spondylitis. Indian Journal of Medical Research. 2018 Dec; 148(6): 761-7620971-59160975-9174http://imsear.searo.who.int/handle/123456789/195720Comb sign in a patient with ankylosing spondylitisJournal ArticleIndiaDivision of Rheumatology/Immunology/Allergy, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C.