My friend has a long cordial professional relationship with one specialist. Both of them treat patients which have related presentations. However, sometimes my friend feels that other doctor may not be as competent in certain areas, but my friend still refers patients to him. I am aware that even the other specialist may have the same feeling about my friend. It might be the case of returning favors to each other.
Do you think this is a right practice? Do you think that unknowingly in some cases patient health may get compromised due to inadequate expertise? What are your opinions?