http://www.thesundaytimes.co.uk/sto/sport/article1670351.ece ?CMP=OTH-gnws-standard-2016_02_21
Have a chew on this... http://www.dailymail.co.uk/sport/football/article-3456465/Ba rcelona-breaking-mould-DNA-testing-La-Liga-giants-prepare-Ch ampions-League-clash-Arsenal.html
Natural causes imo
https://en.wikipedia.org/wiki/Gene_doping
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