Shimizu, Yusuke, and Kazuo Kishi. “Reconstruction of Large Perineal Defects After Advanced Malignant Tumour Resection: A Simple Gluteal Thigh Flap Modification”. Journal of Plastic Surgery and Hand Surgery, vol. 54, no. 5, Jan. 2020, pp. 280-3, doi:10.1080/2000656X.2020.1763373.