Flash Mob Study With Regard to Travel Willingness Among Patients With Cancer

No intervention. Willingness to travel is examined through a survey. The survey will be conducted digitally, but may also be done on paper. In the survey a minimal set of categorized patient data (e.g. age, gender, level of education) is collected as part of the survey. For patients who cannot independently complete the questionnaire (for example due to low literacy skills), a volunteer, medical student or researcher is allowed to help the patient.