In this special episode, we bring you three interviews with key people behind clinical decision tools for prediction of pulmonary embolism. This topic is covered in a BMJ Learning module called 'Step by step: how to diagnose pulmonary embolism', which is a practical guide for GPs available at www.learning.bmj.com - direct URL: https://goo.gl/NyN3FQ.

The program starts with an interview with Dr Phil Wells, who is the author of the Wells score for deep vein thrombosis and pulmonary embolism.

This is followed by a discussion with Dr Gregoire le Gal, author of the paper on age adjusted D-dimer.

The last interview is with Dr Jeff Kline, who is the author of the PERC rule.