Mo Farah case raises concern over protection for athletes London Evening Standard The Standard L carnitine can boost your endurance But give it time Mo Farah, Alberto Salazar and L carnitine Q&A: everything we know Performance enhancing substance was procured from Switzerland for athlete Mo Farah SWI swissinfo.ch Barry Fudge, physiologist and former UK Athletics head of endurance, says Mo Farah's victories were due to meticulous planning, hard work and determination as opposed to "some magical drug or illicit aid". Panorama show Mo Farah changed account to anti doping investigators The Irish Times