Artikkelit - Selaus tekijän mukaan "L umle"
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Patterns of use of obstetrical interventions in 12 countries.
Stephenson, P.A.; Bakoula,C.; Cole, E.; Hemminki, E.; Levasseur, M.; Schenker, J.; Stembera, Z.; Tiba, J.; Verbrugge, H.P.; Wagner, M.G.; Yates, J.; Zupan, J.; Houd, S.; Araventinos, D.; Knutsen, L.; Tuimala, R.; Pineault, R.; L umle
Pediatric and Perinatal Epidemiology (1993)