Hi, we are trying to setup CRM in our company and we heavily rely on our sales of our products through referrals from our database of doctors.

For example, if any patient buys a product (X), it will most probably be referred by doctor A or doctor B. So how do we set this up in the CRM - since later, we would like to analyze and also track which doctors are giving us the most referrals.

Any help is highly appreciated.