President Yoon Suk Yeol on Tuesday remained set on his push for an increase in the annual medical school enrollment quota of 2,000, saying the number "is non-negotiable." "No excuses can justify (doctors') collective action of taking people's health hostage and posing a threat to people's lives," Yoon told some 100 participants including mayors and provincial governors at the Central and Local Government Cooperation Council meeting at Cheong Wa Dae, the former presidential of