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References
Hall AM and Watt JWH: The use of tracheal stoma stents in high spinal cord injury Spinal Cord (2008) 46, 753–755
Cooper JD, Pearson FG, Patterson TR, Ginsberg RJ, Goldberg M, Waters P. Use of silicone stents in the management of airway problems. Ann Thorac Surg 1989; 47: 371–378.