Calcified Nodules in the Superficial Femoral Artery Confirmed by Intravascular Ultrasound, Angioscopy, and Histology oleh Kota Tanaka, MD, Hiroyuki Nagai, MD, Atsunori Okamura, MD, Mutsumi Iwamoto, MD, Satoshi Watanabe, MD, Akinori Sumiyoshi, MD, Satoshi Suzuki, MD, Hirokazu Tanaka, MD, Koichi Inoue, MD, Yasushi Koyama, MD, Katsuomi Iwakura, MD, Kenshi Fujii, MD