Gutierrez, Marwin, Hernandez-Diaz, Cristina, Ventura-Rios, Lucio, Saldarriaga-Rivera, Lina María, Ruta, Santiago, Alva, Magaly, -Trujillo, Claudia Mora, Pérez, Wilkerson, Terrazas, Henry, del Carmen Arape Toyo, Rodolfo, Quintero, Maritza, Solano, Carla, Santiago, Oscar Sedano, Sotomayor, Janet Grisel Huamán, Cefferino, Cesar, Py, Guillermo E, Audisio, Marcelo J, Spindler, Walter Javier, Berman, Horacio, Airoldi, Carla, Wong, Rómulo, del Castillo Araujo, Ana Laura Álvarez, Díaz, Mario E, Villaquiran, Carmen Cerón, Mantilla, Rubén Darío, Mendonça, José Alexandre, da Silveira, Inês Guimarães, do Prado, Aline Defaveri, Bisi, Melissa Cláudia, Rosario, Violeta, Medrano-Sánchez, Jeannette, Muñoz-Louis, Roberto, Lozada-Navarro, Ana Cecilia, Bernal, Araceli, Lozano, Maribel, Pineda, Carlos, and On behalf of the Pan-American League Against Rheumatisms (PANLAR) Ultrasound Study Group