Heart rate response during 6-minute walking testing predicts outcome in operable chronic thromboembolic pulmonary hypertension - Richter, Manuel Jonas (Verfasser); Milger, Katrin (Verfasser); Tello, Khodr (Verfasser); Stille, Philipp (Verfasser); Seeger, Werner (Verfasser); Mayer, Eckhard (Verfasser); Ghofrani, Hossein Ardeschir (Verfasser); Gall, Henning (Verfasser) (BMC pulmonary medicine)