A multicentric quality-control study of exercise Doppler echocardiography of the right heart and the pulmonary circulation. The RIGHT Heart International NETwork (RIGHT-NET) oleh Francesco Ferrara, Luna Gargani, Carla Contaldi, Gergely Agoston, Paola Argiento, William F. Armstrong, Francesco Bandera, Filippo Cademartiri, Rodolfo Citro, Antonio Cittadini, Rosangela Cocchia, Michele D’Alto, Antonello D’Andrea, Philipp Douschan, Stefano Ghio, Ekkehard Grünig, Marco Guazzi, Stefania Guida, Jaroslaw D. Kasprzak, Theodore John Kolias, Giuseppe Limongelli, Alberto Maria Marra, Matteo Mazzola, Ciro Mauro, Antonella Moreo, Francesco Pieri, Lorenza Pratali, Nicola Riccardo Pugliese, Mauro Raciti, Brigida Ranieri, Lawrence Rudski, Rajan Saggar, Andrea Salzano, Walter Serra, Anna Agnese Stanziola, Mani Vannan, Damien Voilliot, Olga Vriz, Karina Wierzbowska-Drabik, Robert Naeije, Eduardo Bossone, On behalf of the RIGHT Heart International NETwork (RIGHT-NET) Investigators