A new treatment is attracting hundreds of North American patients to Mexico. But as Alasdair Baverstock reports, some people are concerned about regulatory standards. Subscribe: http://trt.world/subscribe Livestream: http://trt.world/ytlive Facebook: http://trt.world/facebook Twitter: http://trt.world/twitter Instagram: http://trt.world/instagram Visit our website: http://trt.world