This image was published in "More than Medicine", Fall 2003, Medical World Communications, NJ USA, in an article by Grace K. Henry titled "Che Guevara - A Revolutionary Doctor".
It was also printed in the  book "Living Large" by Earl Large, Panoply Publishing, Chandler, ISBN 978-1-949161-97-6, Arizona 2021 (Fig.56, p.84, 225).