The Contribution of Drugs and Helicobacter pylori to Gastric Mucosa Changes in Patients with Systemic Lupus Erythematosus and Antiphospholipid Syndrome oleh Tatiana M. Reshetnyak, Irina A. Doroshkevich, Natalia V. Seredavkina, Evgeny L. Nasonov, Igor V. Maev, Vasiliy I. Reshetnyak