She sought the advice of Peter Sonksen , the lead author of this article .
Among that group was Liz Ferris , a medical doctor and former Olympian , who was advocating on behalf of athletes .
Liz Ferris sought the advice of Peter Sonksen , the lead author of this article .
Among that group was Liz Ferris , a medical doctor and former Olympian , who was advocating on behalf of athletes .