Know-How Exchange : Advertising/PR

There is a new health and wellness centre that uses salt rooms for the natural treatment of respiratory conditions. It really works for people and we have testimonials. In many countries in Europe and Israel that therapy is even covered by their healthcare systems. We are the first clinic of its kind in Canada and the doctors have no idea what it is. I want to hold an open house, where we will have literature and the doctors can sit in the salt room. My question is, how do I even go about trying to invite them to attend? Do I try and get their private addresses and send them an invite or send one invite per clinic?? I really think if the doctors are on board then Canada will do just as well with salt rooms as in other countries.