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APA Citation
Merli, M. G., Moody, J., Smith, J., Li, J., Weir, S., & Chen, X. (2015). challenges to recruiting population representative samples of female sex workers in China using Respondent Driven Sampling. Social science & medicine, 125, 79–93. http://access.bl.uk/ark:/81055/vdc_100042111192.0x000034