A case of cervical and retroperitoneal squamous cell carcinoma thought to be a G-CSF-producing tumor. (November 2021) - Sakuma, Masako; Nakanishi, Yoko; Kobayashi, Osamu; Nakajima, Takahiro; Kawakami, Kaori; Ikeda, Yuji; Komatsu, Atsushi; Takeya, Chiaki; Sato, Mikiko; Chishima, Fumihisa; Masuda, Shinobu; Kawana, Kei