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Aalen OO, Røysland K, Gran JM, Ledergerber B.Aalen OO, et al.J R Stat Soc Ser A Stat Soc. 2012 Oct;175(4):831-861. doi: 10.1111/j.1467-985X.2011.01030.x.J R Stat Soc Ser A Stat Soc. 2012.PMID: 23193356Free PMC article.
Moger TA, Aalen OO, Heimdal K, Gjessing HK.Moger TA, et al. Among authors: aalen oo.Stat Med. 2004 Feb 28;23(4):617-32. doi: 10.1002/sim.1614.Stat Med. 2004.PMID: 14755393