Waern , A. U. ., Lidell , C. . and Hellsing , K. . (1982) “Alcohol Intake, Serum β2-microglobulin and Ventricular Extrasystoles: Factors related to death in five-year follow up of middle-aged men”, Upsala Journal of Medical Sciences, 87(2), pp. 119–125. doi: 10.3109/03009738209178416.