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- [6] NONSTEROIDAL ANTIINFLAMMATORY DRUGS AND PERFORATED PEPTIC-ULCER LANCET, 1987, 2 (8565): : 968 - 968
- [7] NONSTEROIDAL ANTIINFLAMMATORY DRUGS AND BLEEDING PEPTIC-ULCER LANCET, 1986, 1 (8479): : 462 - 464
- [8] NONSTEROIDAL ANTIINFLAMMATORY DRUGS AND PERFORATED PEPTIC-ULCER LANCET, 1987, 2 (8572): : 1398 - 1398