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Hu, Yannan, Frank J. van Lenthe, Rasmus Hoffmann, Karen van Hedel, e Johan P. Mackenbach. "Assessing the Impact of Natural Policy Experiments On Socioeconomic Inequalities in Health: How to Apply Commonly Used Quantitative Analytical Methods?" BMC Med Res Methodol 2017.

Hu, Yannan, et al. "Assessing the Impact of Natural Policy Experiments On Socioeconomic Inequalities in Health: How to Apply Commonly Used Quantitative Analytical Methods?" BMC Med Res Methodol 2017.