(BEIJING) — They're paralyzed from diving accidents and car crashes, disabled by Parkinson's, or blind. With few options available at home in America, they search the Internet for experimental treatments — and often land on Web sites promoting stem cell treatments in China. They mortgage their houses and their hometowns hold fundraisers as they scrape together the tens of thousands of dollars needed for travel and the hope for a miracle cure. A number of these medical tourists claim some success when they return home: Jim Savage, a Houston man with paralysis from a spinal cord injury, says he can...