Authors: C N Carter; N C Ronald; J H Steele; E Young; J P Taylor; L H Russell; A K Eugster; J E West Journal: Emerg Infect Dis Date: 1997 Jan-Mar Impact factor: 6.883
Authors: Frances C Wright; Calvin H L Law; Linda D Last; Neil Klar; David P Ryan; Andrew J Smith Journal: BMC Health Serv Res Date: 2006-01-16 Impact factor: 2.655