@article{choi_2015, 
  title={Incidence of Chronic Thromboembolic Pulmonary Hypertension after Pulmonary Embolism: A Retrospective Analysis in a University Teaching Hospital}, 
  DOI={10.14345/ceth.15002}, 
  publisher={The Korean Society on Thrombosis and Hemostasis}, 
  author={Choi}, 
  year={2015}, 
  month={May}
  }