Humming greatly increases nasal nitric oxide
Weitzberg E, Lundberg JO. Humming greatly increases nasal nitric oxide. Am J Respir Crit Care Med. 2002;166(2):144-145. doi:10.1164/rccm.200202-138BC
Weitzberg E, Lundberg JO. Humming greatly increases nasal nitric oxide. Am J Respir Crit Care Med. 2002;166(2):144-145. doi:10.1164/rccm.200202-138BC