共 50 条
- [42] BLUE-CROSS-BLUE-SHIELD MASTER MEDICAL COVERAGE NEW ENGLAND JOURNAL OF MEDICINE, 1957, 257 (19): : 944 - 945
- [43] What price survival? The future of Blue Cross and Blue Shield JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1998, 279 (23): : 1863 - 1869
- [47] Recent Developments in the Use of Blue Cross and Blue Shield Plans AMERICAN JOURNAL OF PUBLIC HEALTH AND THE NATIONS HEALTH, 1951, 41 (02): : 147 - 151