Levin M C, Lehky T J, Flerlage A N, Katz D, Kingma D W, Jaffe E S, Heiss J D, Patronas N, McFarland H F, Jacobson S
Viral Immunology Section, National Institutes of Health, Bethesda, Md. 20892, USA.
N Engl J Med. 1997 Mar 20;336(12):839-45. doi: 10.1056/NEJM199703203361205.