Donna R Parker

Intraclass correlation coefficients for cluster randomized trials in primary care: the cholesterol education and research trial (CEART).

Evangelos Evangelou, Charles B Eaton, C. Eaton, 2005, Contemporary clinical trials.

Documentation and Management of Overweight and Obesity in Primary Care

Molly E Waring, Mary B Roberts, Charles B Eaton, 2009, The Journal of the American Board of Family Medicine.