title: Undetectable HDL-cholesterol due to the presence of paraproteinemia.
authors.affiliation: Department of Internal Medicine, Meander Medical Centre, P.O. Box 1502, 3800 BM Amersfoort, The Netherlands.
authors.forename: Peter
authors.initials: P
authors.lastname: van Balen
authors.forename: Albert
authors.initials: A
authors.lastname: van de Wiel