Hope springs eternal in Berlin

IT was in the middle of last year, when cancer survivor Edgar Tang first heard about The Berlin Patient. The 38-year-old was driving home one night while listening to the BBC World Service radio station, when a short blurb came on about a man in Berlin who had been cured of HIV.

"It made me wonder if I had just heard a fictional story. He almost seemed like a mythical creature of sorts. So I called my old fr…