PT - JOURNAL ARTICLE ED - Borer, Jeffrey S. ED - Palacios, Igor F. ED - O'Gara, Patrick ED - Connolly, Heidi ED - Rajamannan, Nalini TI - Updates on Valvular Heart Disease DP - 2005 01 TA - MD Conference Express PG - 10--12 VI - 5 IP - 1 4099 - http://mdc.sagepub.com/content/5/1/10.short 4100 - http://mdc.sagepub.com/content/5/1/10.full AB - Aortic regurgitation (AR) suffers from sparse data, according to Jeffrey S. Boyer, MD, of the Weill Medical College of Cornell University in New York, NY. “AR has been studied less than any other form of valvular heart disease,” he said.