EMERGENCY DEPARTMENT EVALUATION OF ABDOMINAL PAIN IN ELDERLY PATIENTS - Pappas, Apostolos; Toutouni, Hara; Lagoudianakis, Emmanuel; Drantaki, Vasiliki; Andrianopoulos, George; Panoutsopoulos, Athanasios; Konstantoulakis, Manousos; Katergiannakis, Vaggelogiannis (European Journal of Internal Medicine, 2011)