How do we estimate the demand for health services in private medical clinics that do not allow access to their data؟ ?

Collect the patients data from the doctors, the data which has published in the blogs of pharmaceuticals companies and campaign responses feedback through the social media platforms then analyse the data find out what problems right now people are facing most. Now you have identified the market problem now position it. After analyzing the data I would prefer BCG matrix and SWOT analysis framework in this case for increasing sales and gain maximum profit.