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2. National Committee for Clinical Laboratory Standards (NCCLS). Methods for dilution antimicrobial susceptibility tests for bacteria that grow aerobically; Approved Standard – Fifth edition. NCCLS document M7-A5 (ISBN 1-56238-394-9). NCCLS 2000, Wayne, Pennsylvania 19087–1898, USA.
3. National Committee for Clinical Laboratory Standards (NCCLS). Performance standards for antimicrobial susceptibility testing; Twelfth informational supplement. NCCLS document M100-12 (ISBN 1-56238-454-6) NCCLS 2002, Wayne, Pennsylvania 19087–1898, USA.