RT Journal Article SR Electronic T1 Rigid airway JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 334 OP 336 DO 10.3949/ccjm.87a.19129 VO 87 IS 6 A1 Itagane, Masaki A1 Yano, Hiroyuki A1 Kishaba, Tomoo A1 Kinjo, Mitsuyo YR 2020 UL http://www.ccjm.org/content/87/6/334.abstract AB