共 50 条
- [31] THE EFFECTS OF REGULATION, COMPETITION, AND OWNERSHIP ON MORTALITY-RATES AMONG HOSPITAL INPATIENTS [J]. NEW ENGLAND JOURNAL OF MEDICINE, 1988, 318 (17): : 1100 - 1107
- [34] EFFECTS OF REGULATION, COMPETITION, AND OWNERSHIP ON MORTALITY-RATES AMONG HOSPITAL INPATIENTS [J]. NEW ENGLAND JOURNAL OF MEDICINE, 1988, 319 (20): : 1356 - 1357
- [36] MORTALITY-RATES WITH ORAL CONTRACEPTION [J]. NEW ZEALAND MEDICAL JOURNAL, 1977, 86 (601) : 525 - 525