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Tyagi A, Rajalakshmi M, Jeyaraj DA, Sharma RS, Bajaj JS.Tyagi A, et al. Among authors: bajaj js.Contraception. 1999 May;59(5):333-7. doi: 10.1016/s0010-7824(99)00038-4.Contraception. 1999.PMID: 10494487