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Besen G, Chavez-de la Paz E, Tatebayashi M, Flores-Aguilar M, Gangan PA, Munguia D, Wiley CA, Jähne G, Winkler I, Helsberg M, et al.Besen G, et al. Among authors: gangan pa.Antimicrob Agents Chemother. 1995 Jul;39(7):1485-8. doi: 10.1128/AAC.39.7.1485.Antimicrob Agents Chemother. 1995.PMID: 7492090Free PMC article.