AS JOBS IN JOURNALISM GO, Grant McCool's was a plum assignment. Based in Hong Kong for the Reuters news service, McCool covered breaking news throughout east Asia, traveling to South Korea, China and Pakistan. But in 1989, after five hectic years, the native of Scotland was ready for a change. That's when his bosses transferred him to New York City to be an editor.
That's also when the trouble started. After typing on his computer keyboard for hours a day over several months, McCool developed excruciating pain in his hands; some mornings he would awake with his arms throbbing and burning....