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Cambridge, Mass: National Bureau of Economic Research, November 2009
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[S.l.]: SSRN, [2009]
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[S.l.]: SSRN, [2015]
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Bonn: Institute for the Study of Labor (IZA), 2013
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December 26, 2012
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2010
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[S.l.]: SSRN, [2014]
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Bonn: Institute for the Study of Labor (IZA), 2015
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Bonn: Institute for the Study of Labor (IZA), 2013
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Bonn: Institute for the Study of Labor (IZA), 2014
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[S.l.]: SSRN, 2021
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Institute for Operations Research and the Management Sciences (INFORMS), 2011
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Institute for Operations Research and the Management Sciences (INFORMS), 2006
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Public Library of Science (PLoS), 2016
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Proceedings of the National Academy of Sciences, 2012
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National Academy of Sciences, 2012
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BMJ, 2012
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Massachusetts Medical Society, 2011
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2010
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WHO Press, 2010