Bacterial Infections/drug therapy; Clavulanic Acids/therapeutic use; Cross Infection/drug therapy; Penicillins/therapeutic use; Ticarcillin/therapeutic use; Acute Disease; Adolescent; Adult; Aged; Amikacin/administration & dosage; Amikacin/therapeutic use; Bacteria/drug effects; Bacteria/isolation & purification; Bacterial Infections/complications; Bacterial Infections/microbiology; Clavulanic Acids/administration & dosage; Clavulanic Acids/adverse effects; Cross Infection/complications; Cross Infection/microbiology; Drug Combinations/administration & dosage; Drug Combinations/adverse effects; Drug Combinations/therapeutic use; Drug Evaluation; Drug Therapy, Combination; Female; Hemorrhagic Disorders/chemically induced; Humans; Male; Middle Aged; Pancreatitis/chemically induced; Penicillin Resistance; Ticarcillin/administration & dosage; Ticarcillin/adverse effects