The effect of in-lab polysomnography and home sleep polygraphy on sleep position.

"Conflict of interest Author Stacey L. Ishman has received money for consultation from Inspire Company. Author Wojciech Kukwa is a shareholder of Clebre Company. Authors Ewa Migacz and Tomasz Lis declare that they have no conflict of interest. The authors did not receive any financial support for preparation of this paper."

"Compliance with ethical standards: Conflict of interestAuthor Stacey L. Ishman has received money for consultation from Inspire Company. Author Wojciech Kukwa is a shareholder of Clebre Company. Authors Ewa Migacz and Tomasz Lis declare that they have no conflict of interest. The authors did not receive any financial support for preparation of this paper.: Ethical approvalAll 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. In addition, the Bioethical Committee of the Medical University of Warsaw approved this study. Conflict of interest: Author Stacey L. Ishman has received money for consultation from Inspire Company. Author Wojciech Kukwa is a shareholder of Clebre Company. Authors Ewa Migacz and Tomasz Lis declare that they have no conflict of interest. The authors did not receive any financial support for preparation of this paper."