Image: Nariman El-Mofty/AP Women’s marathon world record-holder, Ruth Chepng'etich, has been banned for three years by the Athletics Integrity Unit (AIU), after admitting to Anti-Doping Rule Violations (ADRVs) regarding the presence and use of Hydrochlorothiazide (HCTZ). The 31-year-old Kenyan, a former World marathon champion and a three-time winner of the Chicago Marathon, accepted the charges and sanction following a positive test for the banned diuretic from a sample on 1