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Khanna H, Chopra AP, Arora N, Chaudhry A, Singh Y.Khanna H, et al. Among authors: chopra ap.FEMS Microbiol Lett. 2001 May 15;199(1):27-31. doi: 10.1111/j.1574-6968.2001.tb10646.x.FEMS Microbiol Lett. 2001.PMID: 11356563