This episode's headline: Tug-of-War; Price of Entry; End of the World. The guests include DR. LONNIE BRISTOW, President-Elect, American Medical Association; KAREN IGNANI, Group Health Association of America; DR. STEPHEN UDVARHELYI, Medical Director, Prudential Health Plan; SARA NICHOLS, Attorney, Public Citizen; CORRESPONDENTS: FRED DE SAM LAZARO; BETTY ANN BOWSER; ROGER ROSENBLATT. Byline: In New York: MARGARET WARNER; In Washington: JAMES LEHRER