Heterogeneous impacts of trade shocks on workers / Patrick Arni (ZHAW (Zurich), University of Bristol, CESifo and IZA), Peter H. Egger (ETH Zurich, CEPR and CESifo), Katharina Erhardt (University of Duesseldorf and CESifo), Matthias Gubler (Swiss National Bank), Philip Sauré (JGU Mainz and CEPR) ; IZA Institute of Labor Economics