TABLE I -.

Antibiotic classes and specific antibiotics used in this study

Family	Antibiotics
Beta-lactam antibiotics	Amoxicillin (20 µg)
	Amoxicillin (20 µg) + clavulanic acid (10 µg)
	Piperacillin (30 µg)
	Piperacillin (30 µg) + tazobactam (6 µg)
	Ticarcillin (75 µg)
	Cefuroxime (30 µg)
	Cefoxitin (30 µg)
	Ceftazidime (10 µg)
	Ceftriaxone (30 µg)
	Cefepime (30 µg)
	Aztreonam (30 µg)
	Imipenem (10 µg)
	Meropenem (10 µg)
	Ertapenem (10 µg)
Aminosides	Amikacin (30 µg)
	Gentamicin (10 µg)
	Tobramycin (10 µg)
Quinolones	Ciprofloxacin (05 µg)
Other	Trimethoprim (1.25 µg) + sulfamethoxazole (23.75 µg)