New Delhi CNN  —  A knife attack on a doctor in India has renewed an impassioned debate about whether enough is being done to protect medical staff in the world’s most populous nation’s often crowded and overstretched hospital wards. Last week, thousands of doctors went on strike, shutting down private hospitals and clinics after a doctor was stabbed while on duty in the southern city of Chennai. Oncologist Balaji Jaganathan was allegedly attacked by the relative of a patient who was unhappy