Unfortunately, the original version of this article [1] contained an error. The article was uploaded and published without the updated version which is the author corrected version. There will be an update and erratum to correct this.
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Sygna K, Johansen S, Ruland CM. Recruitment challenges in clinical research including cancer patients and their caregivers. A randomized controlled trial study and lessons learned. Trials. 2015;16:428.
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The online version of the original article can be found under doi:10.1186/s13063-015-0948-y.
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Sygna, K., Johansen, S. & Ruland, C.M. Erratum to: ‘Recruitment challenges in clinical research including cancer patients and their caregivers. A randomized controlled trial study and lessons learned’. Trials 17, 133 (2016). https://doi.org/10.1186/s13063-016-1276-6
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DOI: https://doi.org/10.1186/s13063-016-1276-6