- Association of coronary atherosclerosis with hyperapobetalipoproteinemia [increased protein but normal cholesterol levels in human plasma low density (beta) lipoproteins]. Sniderman, A., Shapiro, S., Marpole, D., Skinner, B., Teng, B., Kwiterovich, P.O. Proc. Natl. Acad. Sci. U.S.A. (1980)