Question: What athlete did a Serbian traditional healer who has specialized in the use of horse placenta treatment to heal athletes used the horse placenta treatment on, she also treated  an Argentine professional footballer who plays as a right back for West Ham United and the Argentina national team?
Sentence (from "Mariana Kovacevic"): During the duration of the 2012 African Cup of Nations in Gabon and Equatorial Guinea she used the horse placenta treatment to heal Ghana's Asamoah Gyan, who had been injured and was supposed to be off football for four weeks.
Relevant evidence: Yes