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. 2019 Feb 11;21(2):e11371. doi: 10.2196/11371

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©John Kildea, John Battista, Briana Cabral, Laurie Hendren, David Herrera, Tarek Hijal, Ackeem Joseph. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 11.02.2019.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Approximate timeline for the Opal project showing how the 6 elements of our participatory stakeholder co-design methodology came together, culminating in the pilot release of Opal in Radiation Oncology. Each element is numbered in the figure and explained in the text. Just over 3 years of co-design and development were undertaken between the development kick off (May 2015) and the pilot release (June 2018). Figure not to scale.