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2 Rivera R, "The mechanism of action of hormonal contraceptives and intrauterine contraceptive devices" 181 (181): 1263-1269, 1999
3 Nelson AL, "The intrauterine contraceptive device" 27 : 723-740, 2000
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5 Grimes DA, "Prophylactic antibiotics for intrauterine device insertion: a metaanalysis of the randomized controlled trials" 60 : 57-63, 1999
6 Xiao BL, "Pharmacokinetic and pharmacodynamic studies of levonorgestrelreleasing intrauterine device" 41 : 353-362, 1990
7 Stanwood NL, "Obstetrician-gynecologists and the intrauterine device: a survey of attitudes and practice" 99 : 275-280, 2002
8 Herndon EJ, "New contraceptive options" 69 : 853-860, 2004
9 Stanford JB, "Mechanisms of action of intrauterine devices: update and estimation of postfertilization effects" 187 : 1699-1708, 2002
10 Ortiz ME, "Mechanisms of action of intrauterine devices" 51 (51): S42-S51, 1996
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