A novel technique using ultrasonography in upper airway management after anterior cervical decompression and fusion. - Shizumasa Murata; Hiroshi Iwasaki; Hiroyuki Oka; Hiroshi Hashizume; Yasutsugu Yukawa; Akihito Minamide; Shunji Tsutsui; Masanari Takami; Keiji Nagata; Ryo Taiji; Takuhei Kozaki; Hiroshi Yamada (BMC Medical Imaging, 2022)