CHOLESTEROL AND CORONARIES - A CITATION-CLASSIC COMMENTARY ON HELSINKI HEART-STUDY - PRIMARY-PREVENTION TRIAL WITH GEMFIBROZIL IN MIDDLE-AGED MEN WITH DYSLIPIDEMIA - SAFETY OF TREATMENT, CHANGES IN RISK-FACTORS, AND INCIDENCE OF CORONARY HEART-DISEASE BY FRICK,M.H., ELO,O., HAAPA,K., HEINONEN,O.P., HEINSALMI,P., HELO,P., HUTTUNEN,J.K., KAITANIEMI,P., KOSKINEN,P., MANNINEN,V., MAENPAA,H., MALKONEN,M., MANTTARI,M., NOROLA,S., PASTERNACK,A., PIKKARAINEN,J., ROMO,M.,