Kammala wannan jumla: An dakatar da Pamela Chepchumba na tsawon shekaru biyu bayan gwajin gwaji na EPO a asibitin
2003 Gasar Cin Kofin Duniya ta IAAF da aka gudanar 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.