Occupational lifting of heavy loads and preterm birth: a study within the Danish National Birth Cohort
Stine Bjerrum Runge, Jacob Krabbe Pedersen, Susanne Wulff Svendsen, Mette Juhl, Jens Peter Bonde, Anne-Marie Nybo Andersen
Occupational and Environmental Medicine Nov 2013, 70 (11) 782-788; DOI: 10.1136/oemed-2012-101173