Impact of endoscopic submucosal dissection of an anal squamous intraepithelial lesion with indistinct border - Kasuga, Kengo; Saito, Yutaka; Wu, Shih Y. S.; Takamaru, Hiroyuki; Sakamoto, Taku; Sekine, Shigeki; Uraoka, Toshio (Endoscopy, 2020)