Stubbe, JH; Boomsma, DI; Vink, JM; Cornes, BK; Martin, NG; Skytthe, A; Kyvik, KO; ... de Geus, EJ; + view all Stubbe, JH; Boomsma, DI; Vink, JM; Cornes, BK; Martin, NG; Skytthe, A; Kyvik, KO; Rose, RJ; Kujala, UM; Kaprio, J; Harris, JR; Pedersen, NL; Hunkin, J; Spector, TD; de Geus, EJ; - view fewer (2006) Genetic influences on exercise participation in 37,051 twin pairs from seven countries. PLoS One , 1 , Article e22. 10.1371/journal.pone.0000022.