Thousands of doctors affiliated with the largest coalition of neighborhood practitioners in South Korea launched a full-scale, one-day strike on Tuesday, despite the government's return-to-work order and threat to disband the organization. The Korean Medical Association, representing some 140,000 doctors, mostly self-employed practitioners, pleaded to the public that it is the "last chance" to salvage the nation's health care from the brink of collapse. Some 50,000 people wer