Collaborations Max-Planck-Institute for Demographic Research, Rostock, Germany Bundesinstitut für Bevölkerungsforschung, Germany Statistisches Amt Kanton Zürich, Switzerland Prof. Philippe Bocquier: Centre de recherche en démographie, Université Catholique de Louvain, Louvain-la-Neuve, Belgium Prof. Everton Lima: Departemento de Demografia, University of Campinas, São Paulo, Brazil Prof. Usha Ram: International Institute of Population Sciences, Mumbai, India Thomas Spoorenberg: United Nations Population Division, New York, USA Nicolas Todd: Centre Roland Mousnier, Centre National de la Recherche Scientifique, Sorbonne Université, Paris, France Prof. Cuiling Zhang: China Population and Development Research Center, Beijing, China
