Work related asthma. A causal analysis controlling the healthy worker effect
Orianne Dumas, Nicole Le Moual, Valérie Siroux, Dick Heederik, Judith Garcia-Aymerich, Raphaëlle Varraso, Francine Kauffmann, Xavier Basagaña
Occupational and Environmental Medicine Sep 2013, 70 (9) 603-610; DOI: 10.1136/oemed-2013-101362