Reflux and the difficult airway.
D000368:Aged; D000758:Anesthesia / Q000009:adverse effects / Q000379:methods*; D005764:Gastroesophageal Reflux / Q000517:prevention & control*; D006801:Humans; D017214:Laryngeal Masks; D008297:Male; D013167:Spondylitis, Ankylosing / Q000150:complications*