Rubuta ci gaba ga wannan sakin layi - An dakatar da Pamela Chepchumba na tsawon shekaru biyu bayan gwajin gwaji don EPO a 2003 IAAF World Cross Country Championships
da aka yi a Lausanne, Switzerland. Ta gama a matsayi na shida, amma an cire ta. Ta dawo a shekara ta 2005 kuma ta lashe rabin Marathon na Udine.