Head and neck cancer patients show poor oral health as compared to those with other types of cancer oleh Hiromi Nishi, Taiji Obayashi, Tsutomu Ueda, Kouji Ohta, Hideo Shigeishi, Syuichi Munenaga, Takashi Kono, Yukio Yoshioka, Masaru Konishi, Ryotaro Taga, Yuya Toigawa, Takako Naruse, Eri Ishida, Eri Tsuboi, Kanae Oda, Kana Dainobu, Tomoko Tokikazu, Kotaro Tanimoto, Naoya Kakimoto, Hiroki Ohge, Hidemi Kurihara, Hiroyuki Kawaguchi