The effect of CPAP therapy on heart rate variability in patients with obstructive sleep apnea.

"Declarations Conflict of interestAll authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers' bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript. Ethical approvalAll procedures performed in studies involving human participants were following the ethical standards of the institutional research committee (Bioethics Committee of the Wroclaw Medical University) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consentInformed consent was obtained from all individual participants included in the study. Conflict of interest All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers' bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript."

"Funding No funding was received for this research."