Brookhart M Alan, Wyss Richard, Layton J Bradley, Stürmer Til
Department of Epidemiology, Gillings School of Global Public Health and Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill.
Circ Cardiovasc Qual Outcomes. 2013 Sep 1;6(5):604-11. doi: 10.1161/CIRCOUTCOMES.113.000359. Epub 2013 Sep 10.