More than 6,400 trainee doctors have resigned in South Korea in protest against the government's plan to increase the number of medical students. Concerns grow that their collective action could endanger public health.

Tensions escalated between the doctors and the government over the plan to add 2,000 to the country's medical school enrollment quota next year. There are about 13,000 trained doctors in South Korean (French) and there is no major disruption to medical services so far, officials have said.