Waern A. U., Lidell C., and Hellsing K. “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, vol. 87, no. 2, June 1982, pp. 119-25, doi:10.3109/03009738209178416.