Peter Van Tassel and Erik Vogt 
Staff Reports, Number 789, August 2016
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             Author Disclosure Statement 
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Peter Van Tassel
I, Peter Van Tassel, have no relevant or material financial interests that relate to the research described in this paper.
Erik Vogt
I, Erik Vogt, declare that I have no relevant or material financial interests that relate to the research described in this paper.
                                
                                
                                
                                
                                
                                
                                
                                