Ley SD, Pillay S, Streicher EM, van der Heijden YF, Sirgel F, Derendinger B, et al. Melting the eis: Nondetection of Kanamycin Resistance Markers by Routine Diagnostic Tests and Identification of New eis Promoter Variants. Antimicrob Agents Chemother. 2021;65(7):e0250220.