A. Ring

Practicing preventive medicine: a national survey of general preventive medicine residency graduates--United States, 1991.

J. Hersey, W. Cates, Arthur P. Liang, 1995, American journal of preventive medicine.

Board certification among preventive medicine residency graduates: characteristics, advantages, and barriers.

A. Dannenberg, J. Hersey, M. Salive, 1994, American journal of preventive medicine.

History of the American Board of Preventive Medicine.

A. Ring, 2002, American journal of preventive medicine.

The Association of Teachers of Preventive Medicine's recommendations for postgraduate education in prevention

J. Konen, K. Nelson, K. Goldenberg, 1991, Academic medicine : journal of the Association of American Medical Colleges.