Sportspeople will die in action as a result of being denied meldonium, according to the heart dr*g's inventor.
On Monday, five-time Grand Slam champion Maria Sharapova announced she had tested positive for the dr*g.
Meldonium, also known as mildronate, was developed to treat diabetes and various heart-related diseases but was banned by the World Anti-Doping Agency (Wada) in January.
"We will see many deaths on the field," Ivars Calvins told BBC Radio 5 live.