?:authorAffiliation
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[\'Department of Economics and Management, University of Parma, Via J. Kennedy, 6, 43125 Parma, Italy. Electronic address: me@pietrobattiston.it.\', \'Department of Economics and Finance, Università Cattolica del Sacro Cuore, Via Necchi, 5, 20123, Milano, Italy. Electronic address: simona.gamba@unicatt.it.\']
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