Note
Disclosure statement
No potential conflict of interest was reported by the authors.
Notes
1 L. M. DAVIDOFF and M. M. SCHECHTER were our teachers during our specialization (1961 – 1964) in the field of neuroradiology, at the Albert Einstein College of Medicine, N.Y., 61, N.Y. This specialization was entirely supported and funded by the National Institute of Health, U.S.A. NIH-Grant-Nr. 2 F11 NB 878 and NIH-Grant-Nr. 2 F11 NB 998.