Evaluation of a Web-based Decision Aid Tool for Larynx Cancer (T3/T4) Patients.

Interviews with patients, physicians and general practitioners (GPs) to define patients' decisional needs

Patients and physicians navigate through Treatmentchoice Decisional Tool and think aloud while running the tool

Patients and physicians fill out questionnaires on the usual care, Delphi study

Interviews with stakeholders Interviews with stakeholders (patients, clinicians, nurses, GP's, patient organizations, insurance companies) to determine the barriers and facilitators to the implementation of shared decision making and the decision aid.