this is the matter of morality and ethics here. Dr. needs of aware that.......mistake is mistake.....its done means need to take care of that from now........everybody makes mistakes for the first time.....but repeating the same mistake time and often doesn' sound good.............so Dr. should not have done such mistakes ..........its his fault. when u realize your fault.........that is the greates achievements in life. so Do wat u feel is good.........then you will always be right.......and do right.