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Plasma levonorgestrel concentration versus time profile over 48 weeks post-implant insertion for women with HIV receiving double-dose levonorgestrel implants (300 mg) plus efavirenz-based antiretroviral therapy (n=27, solid line) compared with women without HIV taking standard-dose levonorgestrel implant (150 mg) alone (n=19, dashed line) [12]. Data presented as medians and interquartile ranges.
