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Jónsdóttir LS, Sigfusson N, Sigvaldason H, Thorgeirsson G.Jónsdóttir LS, et al. Among authors: sigfusson n.Eur Heart J. 1998 Jul;19(7):1011-8. doi: 10.1053/euhj.1998.0980.Eur Heart J. 1998.PMID: 9717035
Sigurdsson E, Sigfusson N, Agnarsson U, Sigvaldason H, Thorgeirsson G.Sigurdsson E, et al. Among authors: sigfusson n.Int J Epidemiol. 1995 Feb;24(1):58-68. doi: 10.1093/ije/24.1.58.Int J Epidemiol. 1995.PMID: 7797357