Unexpected difficult intubation caused by subglottic ring.
Ceron
A
A
Ambroselli
V
V
Zannoni
C
C
Bertollo
D
D
D000768:Anesthesia, General; D000075202:Contraindications; D005260:Female; D006801:Humans; D007442:Intubation, Intratracheal; D008875:Middle Aged; D009767:Obesity, Morbid; D014135:Tracheal Stenosis / Q000150:complications*