Douglas Harper's Etymology Dictionary
M.D.
1755, abbreviation of Latin Medicinæ Doctor "doctor of medicine."
Wiktionary
m.d.
init. 1 main droite. 2 mano destra.
Wikipedia
M.D. (comics)
M.D. was a short lived comic book published by EC Comics in 1955, the sixth title in its New Direction line. The bi-monthly comic was published by Bill Gaines and edited by Al Feldstein. It lasted a total of five issues before being cancelled along with EC's other New Direction comics.