1. Department of Vascular SurgeryCountess of Chester HospitalChesterUK
2. Faculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong
3. Department of SurgeryImperial College NHS TrustHammersmith HospitalLondonUK
4. Department of Aortovascular SurgeryManchester Royal InfirmaryManchesterUK