Waern A. U., Lidell C., & 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), 119-125. https://doi.org/10.3109/03009738209178416