Yamamoto O, Ozawa A, Matsuo I, Ohkido M
Department of Dermatology, Tokai University, School of Medicine.
Nihon Hifuka Gakkai Zasshi. 1990 Nov;100(12):1263-9.
A 25 years old man with psoriatic arthropathy complicated with clinical feature of ankylosing spondylitis was reported. 230 Japanese cases of psoriatic arthropathy were discussed.