Expert center and balloon pulmonary angioplasty network program in chronic thromboembolic pulmonary hypertension: safety and effectiveness of a pioneering experience

1. Velázquez Martín, M.
2. Gómez Menchero, A.
3. González Ferreiro, R.
4. Andrés Morist, A.
5. Maneiro Melón, N.
6. Escribano Subias, P.