Authors: M A Sardiñas; A Z Cárdenas; G C Marie; M S Peña; M A Santiago; M V Sanchez; C P Farrington Journal: Eur J Epidemiol Date: 2001 Impact factor: 8.082
Authors: Manish M Patel; Andrew D Clark; Colin F B Sanderson; Jacqueline Tate; Umesh D Parashar Journal: PLoS Med Date: 2012-10-23 Impact factor: 11.069