Ito, Takamichi, Yuichi Yoshida, Nanako Yamada, Masutaka Furue, and Osamu Yamamoto. 2013. “Dermoscopy of Peristomal Polyps and Metastasis of Colon Cancer”. Acta Dermato-Venereologica 94 (1):96-97. https://doi.org/10.2340/00015555-1646.