Dear Expert,

This survey seeks your opinion on the anticoagulation and antiplatelet regimes in 3 venous stenting scenarios. As you are aware, practices vary. We hope that by collecting your opinion it will help move towards concensus between surgeons, interventionists and haematologists.

In Part 1 of the survey we will ask you for your choice of antithrombotic regimens in 3 scenarios. This should take less than 5 minutes and can be completed on a smartphone or tablet.

In one month's time, Part 2 will be sent with further information on international practice in the same scenarios.

Thank you for taking the time to complete this survey

Professor Alun Davies
Imperial College London

* 1. Email address:

* 3. Which centre do your work in?

* 4. On average, how many cases does your
centre perform per month?

* 5. Please tick choose the most appropriate option to indicate your expertise