Freeman BD, Isabella K, Cobb JP, Boyle WA 3rd, Schmieg RE Jr, Kolleff MH, et al. A prospective, randomized study comparing percutaneous with surgical tracheostomy in critically ill patients. Crit Care Med 2001;29:926-30.
Barba CA, Angood PB, Kauder DR, Latenser B, Martin K, McGonigal MD, et al. Bronchoscopic guidance makes percutaneous tracheostomy a safe, cost-effective, and easy-to-teach procedure. Surgery 1995;118:879-83.
Reilly PM, Anderson HL 3rd, Sing RF, Schwab CW, Bartlett RH. Occult hypercarbia. An unrecognized phenomenon during percutaneous endoscopic tracheostomy. Chest 1995;107:1760-3.
Mitra S, Kapoor D, Srivastava M, Sandhu H. Ultrasound guided PDT in ICU. Indian J Crit Care Med 2013;17:367-9.
Rajajee V, Fletcher JJ, Rochlen LR, Jacobs TL. Real-time ultrasound-guided percutaneous dilatational tracheostomy: A feasibility study. Crit Care 2011;15:R67.