Eric Greenberg and Dave Campbell tell Martin Ashcroft how Life Line Screening brings reassurance to millions by providing an early warning of the risk of stroke and other vascular disease. ÔÇ£ItÔÇÖs important to realize that the medical system we have today is not about prevention,ÔÇØ says Eric Greenberg, vice president of marketing for Life Line Screening. ÔÇ£I get sick, I have symptoms, I go to my doctor and he fixes me.ÔÇØ ThatÔÇÖs all fine and dandy, but what if you donÔÇÖt feel sick and donÔÇÖt have symptoms? YouÔÇÖre not ill, right? Not necessarily.