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Copayments for doctor visits in Germany and the probability of visiting a physician : evidence from a natural experiment
Farbmacher, Helmut, (2009)
Extensions of hurdle models for overdispersed count data
Farbmacher, Helmut, (2013)
GMM with many weak moment conditions : replication and application of Newey and Windmeijer (2009)
Farbmacher, Helmut, (2012)