Bring advertisers for a marketing network site

We run a marketing network site that allows advertising on multiple medical websites. Your job is to get advertisers signed up for the site and purchasing ad zones. Advertisers need to be in the medical, particularly in the Radiology field. One site is also related to Pediatrics and family medicine. We can help you out and provide you with a list of many Radiology company websites if you don't have these resources. You are fully in charge on how you get these signed up (calls, emails, etc). Your salary is based on commission. Depending on your skills - the more and higher value advertisers you get on board, the higher will be your profit, which can go into the tens of thousands of Dollars. It completely depends on you. Please no amateurs - only experiences lead finders. I need you to show me some proof of your previous success in that matter.