| web | Devlin Barrett | Associated Press | 2009-09-02 | |
| web | Eric G. Campbell, Ph.D., Russe... | N Engl J Med | 2007-04-26 | |
| web | Susan Chimonas, Troyen A. Bren... | J Gen Intern Med | 2007-01-17 | |
| web | Richard Smith | J R Soc Med | 2006-01-01 | |
| web | Ashley Wazana, MD | JAMA | 2000-01-19 | |
| web | Madhavan S, Amonkar MM | J Clin Pharm Ther | 1997-06-01 |