Serum iron levels and the risk of Parkinson disease: a Mendelian randomization study. oleh Irene Pichler, Fabiola Del Greco M, Martin Gögele, Christina M Lill, Lars Bertram, Chuong B Do, Nicholas Eriksson, Tatiana Foroud, Richard H Myers, PD GWAS Consortium, Michael Nalls, Margaux F Keller, International Parkinson's Disease Genomics Consortium, Wellcome Trust Case Control Consortium 2, Beben Benyamin, John B Whitfield, Genetics of Iron Status Consortium, Peter P Pramstaller, Andrew A Hicks, John R Thompson, Cosetta Minelli