Wendong Zhang and Mike E. Duffy 2 1: Assistant Professor, Department of Economics, Iowa State University 3 478C Heady Hall, 518 Farm House Lane, Ames, Iowa, 50011 4 515-294-2536, 5 [email protected] 6 2: Professor Emeritus, Department of Economics, Iowa State University 7 475 Heady Hall, 518 Farm House Lane, Ames, Iowa, 50011 8 [email protected] 9 10 forthcoming at Journal of American Societ...

Heterozygote advantage maintains Rhesus factor blood group 1 polymorphism: Ecological regression and case-control studies 2 3 Jaroslav Flegr , Rudolf Hoffmann, Mike Dammann 1 4 5 1 Division of Biology, Faculty of Science, Charles University in Prague, Prague, Czech Republic 6 2 Department of Hematology, Na Homolce Hospital, Prague, Czech Republic 7 8 9 10 * Corresponding author 11 JF E-mail: fl...