Vedder was a career U.S. military physician who while stationed in the Philippines helped demonstrate that beriberi was a nutrient deficiency disease. In 1913, he published Beriberi, his best known monograph. On his return to the United States, he undertook research on scurvy.
References:
papers stored at University of Rochester, where he did his undergraduate research
Beriberi (1913) the full text at openlibrary.org
Public Health in the Philippines (U.S. Army Medical Department Office of Medical History)