Surgeon's workshop: changing the indwelling Provox tracheoesophageal voice prosthesis as an out-patient procedure. Clin. Otolaryngol. 18, 145-149.

@article{Hilgers1994SurgeonsWC,
  title={Surgeon's workshop: changing the indwelling Provox tracheoesophageal voice prosthesis as an out-patient procedure. Clin. Otolaryngol. 18, 145-149.},
  author={Frans J. M. Hilgers and Alfons J. M. Balm and Reinhold T Gregor},
  journal={Clinical otolaryngology and allied sciences},
  year={1994},
  volume={19 2},
  pages={174-5}
}