共 20 条
[2]
MEDICAL INTENSIVE-CARE FOR THE ELDERLY - A STUDY OF CURRENT USE, COSTS, AND OUTCOMES
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1981, 246 (18)
:2052-2056
[5]
DAVIS H, 1980, JAMA-J AM MED ASSOC, V243, P43
[8]
Fleiss JL., 1981, STAT METHODS RATES P, V2
[9]
Freund JE, 1972, ELEMENTARY BUSINESS