Mikko Seppänen* , Anni Virolainen-Julkunen*†, Iiro Kakko‡, Pekka Vilkamaa§, and Seppo Meri*†
Author affiliations: *Helsinki University Central Hospital, Helsinki, Finland; †University of Helsinki, Helsinki, Finland; ‡Sports Institute of Eerikkilä, Tammela, Finland; §Finnish Museum of Natural History, Helsinki, Finland
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