Haglund CL, Martin DP, Diehr P, Johnston R, Richardson WC. Out-of-plan use by Medicare enrollees in a risk-sharing health maintenance organization. Health Care Financ Rev. 1985 Winter;7(2):39-49.
Haglund CL, Martin DP, Diehr P, Johnston R, Richardson WC. Out-of-plan use by Medicare enrollees in a risk-sharing health maintenance organization. Health Care Financ Rev. 1985 Winter;7(2):39-49.