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.
Footnotes
The online version of the original article can be found under doi:10.1186/s13063-015-0948-y.
Reference
- 1.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. doi: 10.1186/s13063-015-0948-y. [DOI] [PMC free article] [PubMed] [Google Scholar]