Complex sentence: ' The U.S. National Institutes of Health (NIH) financially supports rare disease research and development, for without such financial support there would be little or no innovative new approaches developed for prevention, diagnosis or treatment of these devastating diseases.
Split into simpler sentences: ' The U.S. National Institutes of Health (NIH) financially supports rare disease research and development. Without such financial support there would be little or no innovative new approaches developed for prevention, diagnosis or treatment of these devastating diseases.