Associations between pre-pregnancy obesity and asthma symptoms in adolescents
Swatee P Patel, Alina Rodriguez, Mark P Little, Paul Elliott, Juha Pekkanen, Anna-Liisa Hartikainen, Anneli Pouta, Jaana Laitinen, Terttu Harju, Dexter Canoy, Marjo-Riitta Järvelin
J Epidemiol Community Health Sep 2012, 66 (9) 809-814; DOI: 10.1136/jech.2011.133777