Referral criteria from primary care to rheumatology: A qualitative study Ana Urruticoechea-Arana, Miguel Angel Abad-Hernandez, Raquel Almodóvar, Joan Miquel Nolla-Solé, Juan Carlos Hermosa Hernán, María Medina Abellán, Concepción Fito Manteca, José María Pego-Reinosa, José Javier Pérez Venegas, Paloma Vela, Marcos Paulino, Fernando León-Vazquez

Pro-inflammatory cytokines in patients with low back pain: A comparative study Maroua Slouma, Lobna Kharrat, Aymen Tezegdenti, Leila Metoui, Ezzeddine Ghazouani, Rim Dhahri, Imen Gharsallah, Bassem Louzir

Clinical features of patients with hands arthralgia referred from primary care physicians to rheumatologists: A cohort study Gabriel Figueroa-Parra, Martha Mariana Castañeda-Martinez, Pablo Herrera-Sandate, Diana Daniela Castañeda-Martinez, Jorge Antonio Esquivel-Valerio, David Vega-Morales