Update of the position paper of the Spanish Society of Rheumatology on biosimilar drugs Miguel Ángel Abad Hernández, José Luis Andreu, Alejandro Balsa Criado, Federico Díaz-González, José Vicente Moreno Muelas, Rubén Queiro Silva, Juan J. Gómez-Reino

Safety in the use of ultrasound in rheumatology during the COVID-19 pandemic. Spanish Society of Rheumatology positioning paper Lucía Mayordomo, Juan Molina Collada, Félix M. Francisco Hernández, Ángel Bueno, Santos A. Insua Vilariño, Francisco Gabriel Jiménez-Núñez, Rosalía Martínez Pérez, Ingrid Möller, Jacqueline Usón Jaeger, José Francisco García-Llorente, José M. Álvaro-Gracia, Eduardo Aparicio Ruiz, Liliana Asaro Daverio, Esperanza Naredo

Recommendations by the Spanish Society of Rheumatology on Fibromyalgia. Part 1: Diagnosis and treatment Javier Rivera Redondo, Petra Díaz del Campo Fontecha, Cayetano Alegre de Miquel, Miriam Almirall Bernabé, Benigno Casanueva Fernández, Cristina Castillo Ojeda, Antonio Collado Cruz, Pilar Montesó-Curto, Ángela Palao Tarrero, Eva Trillo Calvo, Miguel Ángel Vallejo Pareja, Noé Brito García, Carol Merino Argumánez, M. Nieves Plana Farras