共 2 条
[1]
ESCHENBACHER WL, 1984, AM REV RESPIR DIS, V129, P211
[2]
PROGRESSIVE LOSS OF PROTECTIVE REFLEXES IN THE AIRWAY WITH THE ADVANCE OF AGE
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1960, 174 (18)
:2209-2213