Autoantibodies to extractable nuclear antigens (ENAs) pattern in rheumatoid arthritis patients: Relevance and clinical implications Yasser Emad, Yasser Ragab, Nevin Hammam, Nashwa El-Shaarawy, Ossama Ibrahim, Rania M. Gamal, Magdy Abd-Elsalam, Reem H.A. Mohammed, Mona Hawass, Johannes J. Rasker

Ultrasound tenosynovitis: A differential feature of patients with seronegative rheumatoid arthritis Santiago Ruta, Einer Sanchez Prado, Facundo Salvatori, Juan Arguello, Darío Aguerre, Sebastián Magri, Rodrigo García Salinas

Antisynthetase syndrome complicating the course of established case with rheumatoid arthritis: A rare and under-recognized overlapping disease Yasser Emad, Yasser Ragab, Magdy Abd-Elsalam, Johannes J. Rasker