Cricoid ring thing.
Whyte
E
E
Jefferson
P
P
Ball
D R
DR
D000328:Adult; D000367:Age Factors; D000886:Anthropometry; D002648:Child; D003413:Cricoid Cartilage / Q000033:anatomy & histology*; D006801:Humans; D007442:Intubation, Intratracheal