1) Brazil
2) Jamaica
3) Kenya
4) Russia
Explanation:
The International Association of Athletics Federation Disciplinary Tribunal (IAAF) has banned the 2008 Olympic 1,500m champion and 3-time world champion Asbel Kiprop of Kenya for 4 years for doping until February 2022.Kiprop was suspended by IAAF’s Athletes Integrity Unit (AIU) in May 2018 after having tested positive to blood-boosting Erythropoietin (EPO) in an out-of-competition test in Kenya in November 2017. His backup “B” sample also tested positive for EPO.Asbel Kiprop was awarded gold medal in the 2008 Beijing Olympics after race winner Rashid Ramzi from Bahrain failed a doping test and had his medal taken off.