Published on in Vol 6, No 12 (2022): December
![Sample Bias in Web-Based Patient-Generated Health Data of Dutch Patients With Gastrointestinal Stromal Tumor: Survey Study Sample Bias in Web-Based Patient-Generated Health Data of Dutch Patients With Gastrointestinal Stromal Tumor: Survey Study](https://asset.jmir.pub/assets/3fd17b6fe3b11fd1513f5228aa61a2ad.png 480w,https://asset.jmir.pub/assets/3fd17b6fe3b11fd1513f5228aa61a2ad.png 960w,https://asset.jmir.pub/assets/3fd17b6fe3b11fd1513f5228aa61a2ad.png 1920w,https://asset.jmir.pub/assets/3fd17b6fe3b11fd1513f5228aa61a2ad.png 2500w)
1 Leiden Institute of Advanced Computer Science, Leiden University, Leiden, Netherlands
2 Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands
3 Department of Psychosocial Research and Epidemiology, The Netherlands Cancer Institute, Amsterdam, Netherlands
4 Department of Medical Oncology, Radboud University Medical Center, Nijmegen, Netherlands
5 Department of Surgical Oncology, Erasmus Medical Center, Rotterdam, Netherlands
6 Department of Medical Oncology, Erasmus Medical Center, Rotterdam, Netherlands
7 Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
8 Department of Methodology and Statistics, Leiden University, Leiden, Netherlands
9 Sarcoma Patient Advocacy Global Network, Wölfersheim, Germany
10 Department of Medical Oncology, Leiden University Medical Center, Leiden, Netherlands
11 The Netherlands Organisation for Applied Scientific Research, Den Haag, Netherlands