Ümit Dinçer, Engin Çakar, Mehmet Zeki Kıralp, and Hasan Dursun. 2008. “Can Isotretinoin Induce Sacroiliitis: Three Cases”. Archives of Rheumatology 23 (4):157-59. http://anadolupsikiyatri.net/index.php/pub/article/view/271.