TNF and chronic recurrent multifocal osteomyelitis: The concomitant treatment for NBO and its comorbidity included sulfasalazine (n = 12; 13.2%), methotrexate (n = 18; 19.8%), pamidronate (n = 23; 25.2%), and tumor necrosis factor-α inhibitors (n = 27; 29.7%).