Funding for this research was provided by:
Karl und Veronica Carstens-Stiftung (KVC 01085/2016)
Charité – Universitätsmedizin Berlin (scholarship)
Text and Data Mining valid from 2018-12-19
First Online: 19 December 2018
Compliance with Ethical Standards
: This study was partially supported by a grant from Karl und Veronica Carstens-Stiftung (grant KVC 01085/2016). DA reports a scholarship from the Charité-University Hospital Berlin for conducting the study.
: BB, MT and DA received travel expenses, accommodation and free symposium registration by Karl und Veronica Carstens-Stiftung. BB and MT received research grants, personal fees and non-financial support from acupunctural and homeopathic organizations outside the submitted work. TK, AM, MH, KI and TR declare that they have no conflict of interest. The authors preclude any influence by the sponsor or other organizations on the choice of sample, the economic methods used and the study results.
: The study was approved by the ethics review board of the Charité-University Hospital Berlin (EA1/320/16). Written informed consent by the patients was redundant as no intervention was provided and participation was anonymous. However, a brochure containing all relevant information about the study was handed out to the patients.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.