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APA Citation
Hopewell, S., Dutton, S., Yu, L., Chan, A., & Altman, D. G. (2010). the quality of reports of randomised trials in 2000 and 2006: comparative study of articles indexed in PubMed. BMJ, 340, . http://access.bl.uk/ark:/81055/vdc_100144732160.0x000026