Signs of blood doping in 18 percent of endurance athletes who competed at 2011, 2013 IAAF World Championships, says report - Sports News , Firstpost
Retesting the anti-doping samples: Best tool for deterrence? – SEMS-journal
Frontiers | Prevalence Estimate of Blood Doping in Elite Track and Field Athletes During Two Major International Events | Physiology
Drugs in sport - Curious
What you need to know about performance enhancing drugs in the Summer Olympics - Washington Post
Doping in Endurance Sports - Adventure Medic
Performance Enhancing Drugs in Ultra Running | Australian Ultra Runners Association
The science of doping and how cheating athletes pass drug tests
Four Kenyan runners banned in a single day for anti-doping violations | Off The Ball
Doping Free | S C Nutrition | Top Quality Sports Nutrition Specialized for Endurance Sports.
Doping at the Tour de France - Wikipedia
10 Performance-enhancing Drugs That Aren't Steroids | HowStuffWorks
What is Blood Doping? | Live Science
What banned drugs do cheating athletes take? - The Washington Post
Blood Doping | Pro Test Diagnostics
Performance Enhancing Hormone Doping in Sport - Endotext - NCBI Bookshelf
The amateur's complete guide to blood doping
Doping widespread in Kenya ahead of World Athletics Championships — report | Sports| German football and major international sports news | DW | 23.09.2019
Doping In Endurance Sports: Why Some Athletes Use EPO & Steroids – EndurElite
Legal
Current Guidelines and Policy on Doping in Sport – Human Kinetics Canada
What the Heck is the Biological Passport, Anyway? | Outside Online
/cdn.vox-cdn.com/uploads/chorus_asset/file/11736271/GettyImages_888768660.jpg "Ryan Lochte broke doping rules. It happens far more than you think. - Vox")
Ryan Lochte broke doping rules. It happens far more than you think. - Vox
Drugs in sport - Curious
Performance Enhancing Drugs in Sports Fast Facts - CNN
