1. Is early tracheostomy safe in cardiac patients with median sternotomy incisions? 
Steven A Stamenkovic, Ian S Morgan, David R Pontefract, MB, Ciro Campanella 
The Annals of Thoracic Surgery 
Volume 69, Issue 4, Pages (April 2000)
DOI: /S (99)

2. Fig 1 Day of tracheostomy formation. (Y-axis: %; X-axis: days).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

3. Fig 2
Tracheostomy bacterial isolates (pie chart). (Coagulase-negative Staphylococcus [black]); Staphylococcus aureus [thick black oblique lines]; Pseudomonas aeruginosa [white]; Enterococcus [thin black oblique lines]; other [horizontal lines]).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

4. Fig 3
Type of stoma. (Y-axis: %; X-axis: formal/percutaneously/ unknown).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

5. Fig 4 Duration of tracheostomy. (Y-axis: %; X-axis: days).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )