Variance Components Models for Physical Activity With Age as Modifier: A Comparative Twin Study in Seven Countries
Vink, Jacqueline M.; Boomsma, Dorret I.; Medland, Sarah E.; de Moor, Marleen H. M.; Stubbe, Janine H.; Cornes, Belinda K.; Martin, Nicholas G.; Skytthea, Axel; Kyvik, Kirsten O.; Rose, Richard J.; Kujala, Urho M.; Kaprio, Jaakko; Harris, Jennifer R.; Pedersen, Nancy L.; Cherkas, Lynn; Spector, Tim D.; de Geus, Eco J. C. (2011)