Peter Armstrong

Warfarin Sodium versus Low-Dose Heparin in the Long-Term Treatment of Venous Thrombosis

Russell D. Hull, Terry Delmore, Edward Genton et al. · New England Journal of Medicine · 1979 · 609 citations

Low-dose Heparin, Warfarin Sodium, Pharmacotherapy +17

Health status and population characteristics of dogs and cats examined at private veterinary practices in the United States

Elizabeth M. Lund, Peter Armstrong, Claudia A. Kirk et al. · Journal of the American Veterinary Medical Association · 1999 · 602 citations · Full text

Fentanyl blood concentration-analgesic response relationship in the treatment of postoperative pain.

G. K. Gourlay, S R Kowalski, J L Plummer et al. · PubMed · 1988 · 266 citations

Fentanyl, Acute Pain, Pain Medicine +21

Fentanyl Blood Concentration-Analgesic Response Relationship in the Treatment of Postoperative Pain

Geoffrey K. Gourlay, S. Kowalski, John L. Plummer et al. · Anesthesia & Analgesia · 1988 · 233 citations

Magnetic resonance imaging of fistula-in-ano

Peter J. Lunniss, Peter Barker, Abdul H. Sultan et al. · Diseases of the Colon & Rectum · 1994 · 210 citations