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The circumference of a person's neck is a useful predictor of difficulty of insertion of a breathing tube.
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Inclusion Criteria:
Exclusion Criteria:
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adult patients who require tracheal intubation for general anesthesia and surgery
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Charleston Area Medical Center | Charleston | West Virginia | 25304 | United States |
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