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1by Svenson, L W, Warren, S, Metz, L M, Schopflocher, D PGet access
Published in American Journal of Epidemiology (2005)
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2by Warren, K. G., Patten, S. B., Schopflocher, D. P., Metz, L. M., Warren, S., Svenson, L. W.Get access
Published 2007
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