APA (7th ed.) Citation
(2026). Friend or foe: Face masks in patients with COPD at high altitude. Physiological Reports.
Chicago Style (17th ed.) Citation
"Friend or Foe: Face Masks in Patients with COPD at High Altitude." Physiological Reports 2026.
MLA (9th ed.) Citation
"Friend or Foe: Face Masks in Patients with COPD at High Altitude." Physiological Reports, 2026.
Warning: These citations may not always be 100% accurate.