Vianna, A., Rangel, D., Saboya, L., Alves, A., Aguiar, A., Kalichsztein, M., . . . Adolphsson, S. (2007). Survey of tracheostomy in the intensive care unit. BioMed Central.

Vianna, A., D. Rangel, LF Saboya, A. Alves, A. Aguiar, M. Kalichsztein, B. Bockorny, و S. Adolphsson. Survey of Tracheostomy in the Intensive Care Unit. BioMed Central, 2007.

Vianna, A., et al. Survey of Tracheostomy in the Intensive Care Unit. BioMed Central, 2007.