web | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3249408/ |
author | Johanna E. Torfadottir, Laufey Steingrimsdottir |
publication | Am J Epidemiol |
date | 2012-01-15 |
web | Johanna E. Torfadottir, Laufey... | Am J Epidemiol | 2012-01-15 |
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