| Nomination for Nobel Prize in Physiology or Medicine | |
| Year: | 1912 |
| Number: | 112 - 0 |
| Motivation: | Dr Mary E. Walker, Washington, DC, US, was nominated for the "discovery of preventative of heart failure". Nominator was A.S. Helton, MD, Washington, DC, US. Nomination was declared invalid by the Nobel Committee, as A.S. Helton had not been invited to make a nomination for the Prize of 1912. |