1. Health Services Research I. National Center for Health Statistics (U.S.) II. Kerr White Health Care Collection III. NCHS advancedata ; no. 24.
1. Health Services Research I. National Center for Health Statistics (U.S.) II. Kerr White Health Care Collection III. NCHS advance data ; no. 28.
1. Health Services Research 2. United States--Statistics, Medical. I. Gagnon, Raymond O. II. Ezzati, Trena. III. Kerr White Health Care Collection IV. National Center for Health Statistics (U.S. V. NCHS advancedata ; no. 30.
1. Health Services Research I. Ezzati, Trena. II. Kerr White Health Care Collection III. National Center for Health Statistics (U.S.) IV. NCHS advancedata ; no. 31.
1. Health Services Research I. Kerr White Health Care Collection II. National Center for Health Statistics (U.S.)
1. Health Services Research I. Kerr White Health Care Collection II. National Center for Health Statistics (U.S.) III. NCHS advancedata ; no. 34.
1. Health Services Research I. National Center for Health Statistics (U.S.) II. Kerr White Health Care Collection III. National Nursing Home Survey. IV. NCHS advancedata ; no. 35.
1. Health Services Research I. National Center for Health Statistics (U.S.) II. Kerr White Health Care Collection III. NCHS advancedata ; no. 37.
1. Health Services Research I. Kerr White Health Care Collection II. National Center for Health Statistics (U.S.) III. NCHS advancedata ; no. 38.