 Xigashada Sawirka, Getty Images Dr Lawrence Epstein, oo horay madaxweyne uga soo ahaa Machadka Mareykanka ee caafimaadka hurdadadm ahaana agaasin caafimaadka hurdadad wuxuu sheegay 70 milyan oo qof oo ku nool dalka Mareykanka ay la kulmaan dhibaatooyin la xidhiidho hurda yari. 