Legionella contamination of dental-unit waters.
Volume 61, no. 4, p. 1211, column 2, line 40: this sentence should read as follows. "The viable-culture methods for Legionella sp. detection, however, often fail, and the Centers for Disease Control and Prevention has turned, when necessary, to PCR for epidemiological investigations of Legionnaires' disease and Pontiac fever (19)." Line 46: "(6)" should read "(11)." [This corrects the article on p. 1208 in vol. 61.].
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