Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01LE1903A, 01LE1903A, 01LE1903A)
Leibniz-Institut für Troposphärenforschung e.V.
Received: 26 April 2022
Accepted: 30 August 2022
First Online: 15 September 2022
: Ethical approval for the study was issued by Lung Center of The Philippines, Institutional Ethics Review Board (LCP-IERB code: LCP-CS-024-2019). Consent to participate was obtained from all the study participants prior measurements. The study was carried out in accordance with a named standard: commonly the Declaration of Helsinki. Exception: Research gathered via questionnaires.
: All the authors give permission to publish research findings.
: The authors declare no competing interests.