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APA Citation
O'Brien, S., Gupta, J., Najia, S., & Yehia, M. (2008). update on female sterilisation: report from an international symposium on considerations for assessing long-term failure rates. Journal of family planning and reproductive health care, 34(1), 13–18. http://access.bl.uk/ark:/81055/vdc_100143576502.0x000013