Denning D W, Evans E G, Kibbler C C, Richardson M D, Roberts M M, Rogers T R, Warnock D W, Warren R E
Department of Infectious Diseases and Tropical Medicine (Monsall Unit), North Manchester General Hospital.
BMJ. 1995 Nov 11;311(7015):1277-81. doi: 10.1136/bmj.311.7015.1277.