*Competence Center for Clinical Studies; and

†Institute for Biometrics, University of Bremen, Bremen, Germany.

Address correspondence and reprint requests to Wolfgang von Heymann, Dr. Med, University Bremen, Schwachhauserheerstr 367, D-28203 Bremen, Federal Republic of Germany; E-mail: vonheymann@aerzteseminar-mwe.de

Acknowledgment date: April 9, 2012. First revision date: May 29, 2012. Second revision date: August 9, 2012. Acceptance date: September 14, 2012.

The device(s)/drug(s) is/are FDA-approved or approved by corresponding national agency for this indication.

Funds to support this work were received from: Deutsche Gesellschaft für Manuelle Medizin (DGMM) - Aerzteseminar für Manuelle Wirbelsaeulen- und Extremitaetentherapie (MWE).

Relevant financial activities outside the submitted work: support for travel to meetings.

W.v.H. is member of the board of the DGMM. All other authors declare no conflict of interest regarding any medical measures tested in this clinical trial.