Kaldmäe M., Zilmer M., Viigimaa M., Zemtsovskaja G., Tomberg K., Kaart T., and Annuk M. “Cardiovascular Disease Risk Factors in Homeless People”. Upsala Journal of Medical Sciences, vol. 116, no. 3, June 2011, pp. 200–207, doi:10.3109/03009734.2011.586737.