Format
A dataframe conraining following variables:
Source
Scott D.W., Gotto A.M., Cole J.S., Gorry G.A. (1978). Plasma lipids as collateral risk factors in coronary artery disease: a study of 371 males with chest pain. Journal of Chronic Diseases, 31, 337--345. Hand D.J., Daly F., Lunn A., McConway A. (1994). A Handbook of Small Data Sets. Londen: Chapman and Hall, dataset 277.