"Every night at about 9:30, Train No. 339 pulls into the shabby station in the northern Indian farm town of Bathinda, in Punjab state. Locals call No. 339 by a chilling name -- 'the cancer train.' It routinely carries at least 60 cancer patients who make the overnight journey with their families to the town of Bikaner for treatment at the government's regional cancer center. People say they never used to see so many cancer patients in this farm region."