With the doctors' strike in West Bengal inching towards a sixth day, Chief Minister Mamata Banerjee today said she accepts all valid demands of the protesting doctors and requested them to return to work. Ms Banerjee, addressing the media this evening, said, "We are not going to take any strict action against the doctors". The doctors, however, are in no mood to relent and have refused to call of their protest. Meanwhile, the central government has asked for a report from the state, sources said on Saturday.