
Prof Markus Ferrari, now Chief Physician of the Department of Internal Medicine I at the Helios Dr Horst Schmidt Clinics in Wiesbaden, Germany, was looking for a way to bring down this pressure and keep blood flowing through the veins.

Prof Markus Ferrari, now Chief Physician of the Department of Internal Medicine I at the Helios Dr Horst Schmidt Clinics in Wiesbaden, Germany, was looking for a way to bring down this pressure and keep blood flowing through the veins.