Harri Hemilä1, Elizabeth Chalker2. 1. Department of Public Health, University of Helsinki, POB 41, FI-00014, Helsinki, Finland. harri.hemila@helsinki.fi. 2. University of Sydney, Sydney, Australia.
Authors: Marlies Karsch-Völk; Bruce Barrett; David Kiefer; Rudolf Bauer; Karin Ardjomand-Woelkart; Klaus Linde Journal: Cochrane Database Syst Rev Date: 2014-02-20