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London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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@Doctor_Cake
Just published a comment on athlete biological passports, written by Yorck Olaf Schumacher.
It's free to download and read if you register on the website.
http://www.thelancet.com/journals/lanhae/article/PIIS2352-3026%2814%2970009-2/fulltext