Locally Advanced Breast Cancer Involving the Skin Surface Treated With Radiation Therapy Using a Hydrogen Peroxide Solution–Soaked Gauze Bolus: A Case Report oleh Shintaro Shiba, MD, PhD, Tetsuya Watanabe, MP, Takuya Kaminuma, MD, PhD, Etsuko Miyamoto, Motohiro Kawashima, MP, PhD, Daisuke Irie, MD, PhD, Ken Ando, MD, PhD, Tatsuya Ohno, MD, PhD