1. Active Versus Passive Humidification: Efficiency Comparison Between the Methods
2. Heated humidification versus heat and moisture exchangers for ventilated adults and children;Kelly;Cochrane Database Syst. Rev.,2010
3. Long-term care of the patient with a tracheostomy;Lewarski;Am. J. Respir. Crit. Care Med.,2005
4. Wilkinson K.A. Martin I.C. Freeth H. et al 2014 On the right trach. A review of the care received by patients who underwent a tracheostomy http://www.ncepod.org.uk/2014report1/downloads/On%20the%20Right%20Trach_Summary.pdf
5. Tracheostomy guidelines https://www.stgeorges.nhs.uk/gps-and-clinicians/clinical-resources/tracheostomy-guidelines/