This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Medical etiquettes are between which of the following categories? 
Select and explain. 
A. Medical professionals, B. Medical professionals and pharmaceutical companies, C. Medical professionals and patients, D. Pharmaceutical companies and patients
A: Medical professionals
Answer: A: Medical professionals 
Explanation: Medical etiquette deals with the conventional laws of couesy observed between members of the medical profession. A doctor should behave with his colleagues as he would have them behave with himself. Ethical behaviour is a self-imposed duty upon each doctor. A doctor should not criticise or denigrate the professional ability of another doctor, while dealing with a patient. Ref: The Essentials of Forensic Medicine and Toxicology by Dr. K. S. Narayan Reddy, 27th edition, Page 1.