Juvenile Sjogren's Syndrome: clinical Characteristics With Focus on Salivary Gland Ultrasonography - Hammenfors, Daniel S; Valim, Valeria; Bica, Blanca E. R; Pasoto, Sandra G; Lilleby, Vibke; Nieto-gonzalez, Juan Carlos; Silva, Clovis A; Mossel, Esther; Pereira, Rosa Maria Rodrigues; Coelho, Aline (Arthritis care & research, 2020)