Authors: G Wiedermann; F Ambrosch; H Kollaritsch; H Hofmann; C Kunz; E D'Hondt; A Delem; F E André; A Safary; J Stéphenne Journal: Vaccine Date: 1990-12 Impact factor: 3.641
Authors: J S Mao; D X Dong; H Y Zhang; N L Chen; X Y Zhang; H Y Huang; R Y Xie; T J Zhou; Z J Wan; Y Z Wang Journal: J Infect Dis Date: 1989-04 Impact factor: 5.226
Authors: F A Majeed; J M Stuart; K A Cartwright; R Room; J R Gilkes; M C Smith; B E Watson Journal: Epidemiol Infect Date: 1992-08 Impact factor: 2.451