Wade-Dahl-Till valve was partially built by the novelist of what nationality?
Wade-Dahl-Till valve The Wade-Dahl-Till (WDT) valve is a cerebral shunt developed in 1962 by hydraulic engineer Stanley Wade, author Roald Dahl, and neurosurgeon Kenneth Till.
Stefan Zweig Stefan Zweig ( ; ] ; November 28, 1881 – February 22, 1942) was an Austrian novelist, playwright, journalist and biographer. At the height of his literary career, in the 1920s and 1930s, he was one of the most popular writers in the world.