Beard, D., Campbell, M., Blazeby, J., Carr, A., Weijer, C., Cuthbertson, B., . . . Cook, J. (2020). Considerations and methods for placebo controls in surgical trials (ASPIRE guidelines). Elsevier.
Chicago-viite (17. p.)Beard, DJ, et al. Considerations and Methods for Placebo Controls in Surgical Trials (ASPIRE Guidelines). Elsevier, 2020.
MLA-viite (9. p.)Beard, DJ, et al. Considerations and Methods for Placebo Controls in Surgical Trials (ASPIRE Guidelines). Elsevier, 2020.
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