Dr John Swinnen (FRACS General & FRACS Vascular) spent the first 20 years of his Surgical Career working as a General Surgeon in UK & NZ. At the age of 42 he retrained as a Vascular Surgeon and has spent the last 20 years working as a Vascular / Endovascular Surgeon & Dialysis Access Specialist at Westmead Hospital in Sydney, Australia. He is a qualified Sonographer (DDU Vascular) and runs the Westmead Vascular Ultrasound Lab. John is a Professor of Surgery at Sydney University and has an interest in clinical research. For the last 10 years, Dr John also works 2 months every year as a War Surgeon with MSF (Doctors Without Borders) in zones of conflict, including Gaza, Afghanistan, Pakistan, Eastern Congo, Yemen and Central Africa.