Onion Skin Lesion of the Renal Small Artery in a Patient With Polymyositis and Hemolytic Uremic Syndrome oleh Shigekazu Kurihara, Naoki Sawa, Keita Inui, Daisuke Ikuma, PhD, Yuki Oba, Hiroki Mizuno, Akinari Sekine, Masayuki Yamanouchi, PhD, Eiko Hasegawa, Tatsuya Suwabe, PhD, Kei Kono, Keiichi Kinowaki, PhD, Kenichi Ohashi, PhD, Shigeki Tomita, PhD, Tadanobu Okubo, Yoshifumi Ubara, PhD