UKPMC Funders Group Author Manuscript Epidemiology. Author manuscript; available in PMC 2012 April 12. Published in final edited form as: EpidemiologyJanuary ; 22(1): 68–73. doi:EDE.0b013e3181fdcd99.

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Date: 2012-09-29 08:50:43		UKPMC Funders Group Author Manuscript Epidemiology. Author manuscript; available in PMC 2012 April 12. Published in final edited form as: EpidemiologyJanuary ; 22(1): 68–73. doi:EDE.0b013e3181fdcd99. Add to Reading List Source URL: www.ag-myresearch.com Download Document from Source Website File Size: 337,33 KB Share Document on Facebook