Dr Robin Chakraverty, former chief medical officer at UK Athletics, told British legislators he injected Farah with 13.5 millilitres (ml) of L-carnitine prior to his London Marathon debut but had "forgotten" to record it in the necessary forms.
Sebastian Coe has long been one of the most outspoken critics of doping in athletics yet the newly-elected president of the sport's governing body has remained silent this week in the face of potentially its most damning drugs scandal yet.