Knowledge management through two virtual communities of practice (Endobloc and Pneumobloc). - Beatriz Lara; Francesca Cañas; Antonieta Vidal; Núria Nadal; Ferran Rius; Eugeni Paredes; Marta Hernández; Francisco J. Maravall; Josep Franch-Nadal; Ferrán Barbé; Dídac Mauricio (Health Informatics J., 2017)