evic, who suffers =rom rheumatoid arthritis, had a nerve stimulator implanted as part of a =edical trial. Her symptoms have lessened significantly. SARAH WONG FOR THE NEW =ORK TIMES By MICHAEL BEHAR May 23, 2014 EFTA_R1_01765565 EFTA02585830 One morning =n May 1998, Kevin Tracey converted a room in his