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The role of simulation in surgical training.

Ann R Coll Surg Engl. 2000 Mar 1;82(2):88-94.
Randomized Controlled Trial

[Percutaneous or surgical trachetomy. Prospective, randomized comparison of the incidence of early and late complications].

Minerva Anestesiol. 1999 Jul 1; 65 (7-8): 521-7.
Review

Recent developments in percutaneous tracheostomy: improving techniques and expanding roles.

Curr Opin Crit Care. 2005 Aug 1;11(4):326-32.