Screening for heterozygous familial hypercholesterolemia in Poland – The diagnostic cut-off points for clinical criteria and LDL-cholesterol, validated by age. Issue 1 (July 2015) - Wegrzyn, A.; Fijalkowski, M.; Chlebus, K.; Wasag, B.; Chmara, M.; Zuk, M.; Limon, J.; Rynkiewicz, A.; Gruchala, M.