This article relies largely or entirely on a single source. (October 2019)
Danish Dr. Emil Vodder (20 February 1896 - 17 February 1986) and his wife Dr. Estrid Vodder proposed the alternative medicine practice of "lymphology". While working on the French Riviera treating patients with chronic colds, they noticed these patients had swollen lymph nodes. The Vodders in 1932 began to study the lymph system, and developed careful hand movements to cause lymph movement. In 1936 after four years of research they introduced this technique to the world in Paris, France. They spent the rest of their lives demonstrating and teaching this method.