Dr Alan Watkins is an Honorary Senior Lecturer in Neuroscience and Psychological Medicine at Imperial College and runs a training and coaching company.

BBC: NEWS | Health | How to temper your temper

In 2002, Dr. Colin Bouwer, the Head of Psychological Medicine at the University of Otago in Dunedin, New Zealand, where I used to be on staff, was found guilty of murdering his wife by secretly and repeatedly injecting her with glucose-lowering drugs, sometimes in the university's own teaching hospital.

CNN: Bring medical misdeeds into the light