Complex sentence: The first use for vitamin E as a therapeutic agent was conducted in 1938 by Widenbauer, who used wheat germ oil supplement on 17 premature newborn infants suffering from growth failure.
Split into simpler sentences: The first use for vitamin E as a therapeutic agent was conducted in 1938 by Widenbauer. Widenbauer used wheat germ oil supplement on 17 premature newborn infants suffering from growth failure.