89A 29-year-old woman is critically ill. The illness was manifested by high fever, chills, sweating, aching pain in lumbar area, a discomfort during urination, and frequent bowel voiding. Pasternatsky’s sign is positive in both sides. On lab exam, WBC - 20×109/l; Urinalysis: protein - 0,6 g/L, leukocyturia, bacteriuria. What is the preliminary diagnosis?