Authors: J L Balibrea; A Bullon; A de la Fuente; A de la Alarcon; J Fariñas; P Collantes; M Gil; M Gombau; R Morales; F Sanchez Journal: Thorax Date: 1975-08 Impact factor: 9.139
Authors: D Ross; R Sutton; J Dow; L Gonzalez-Lavin; G Hendrix; K Jefferson; L McDonald; M Petch; C Smithen; E Sowton Journal: Br Med J Date: 1972-06-10