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ACKNOWLEDGMENTS
We would like to thank reviewers F. Jackson and M. Watabe and the editor P. O’Connor for their comments and suggestions that improved an early version of the manuscript. This is a contribution to the scientific project CGL2011-30069-C02-01/02 from the Ministerio de Economía y Competitividad of Spain. B.V. acknowledges support from the Ministerio de Ciencia e Innovación (Subprograma Juan de la Cierva (MICINN-JDC) 2011). This paper is part of the unpublished Ph.D. dissertation of A.G.S., who is supported by a FI grant (2008FI-AGAUR). The Generalitat de Catalunya (Departament de Cultura) supported research and fieldwork. We thank staff members of Serveis Cientifico-Tècnics (Campus UB).
Handling editor: Patrick O’Connor
