Transmission of childhood tuberculosis: risk factors associated with an unidentified index case and outbreak evolution in Barcelona (1987--2007)
Jeanne L Nelson, Antonio Moreno, Angels Orcau, Neus Altet, Antoni Martinez-Roig, Joan A Cayla, Marti Casals, Juan Pablo Millet, Fernando Moraga-Llop, Childhood Tuberculosis Working Group {of Barcelona}, {others}
January 2010