CC BY-NC-ND 4.0 license.
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(CC) Creative Commons License
(BY) Attribution – You the licensee may copy, distribute, display and perform the work only if you give the author (in this case Paul W. Scharff M.D.) the credit.
(NC) Non-commercial – Licensees may copy, distribute, display, and perform the work only for noncommercial purposes.
(ND) No Derivative Works – Licensees may copy, distribute, display and perform only verbatim copies of the work, not derivative works based on it.
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