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Ollila E, Koivusalo M, Hemminki E.Ollila E, et al.Int J Health Serv. 2000;30(1):87-110. doi: 10.2190/JHGH-0AND-8416-G7U8.Int J Health Serv. 2000.PMID: 10707301Review.
Gissler M, Ollila E, Teperi J, Hemminki E.Gissler M, et al. Among authors: ollila e.Paediatr Perinat Epidemiol. 1994 Oct;8(4):391-400. doi: 10.1111/j.1365-3016.1994.tb00478.x.Paediatr Perinat Epidemiol. 1994.PMID: 7870624