[Progressive multifocal leukoencephalopathy as the first manifestation of acquired immunodeficiency syndrome. Apropos of 2 cases].G Ribera, Á Urbano-Márquez, R. Monforte et al.|PubMed|1988Cited by 0
[Hemoptysis: a prospective study of 108 cases in an emergency service].Enric Pedrol, Á Urbano-Márquez, Xavier Bosch et al.|PubMed|1991Cited by 0