Pre- and in-hospital lactate ratio as a predictor of mortality in severe diabetic ketoacidosis: a multicenter prospective cohort study - Sebastian-Valles, Fernando; Sampedro-Nunez, Miguel Antonio; Arranz-Martin, Jose Alfonso; Navas-Moreno, Victor; Marazuela, Mónica; López-Izquierdo, Raúl; Vegas, Carlos del Pozo; Soto, Joseba Rabanales; Martin-Conty, José Luis; Sanz-Garcia, Ancor; Martin-Rodriguez, Francisco (European Journal of Internal Medicine, 2026)