Childhood socioeconomic position, adult socioeconomic position and social mobility in relation to markers of adiposity in early adulthood: evidence of differential effects by gender in the 1978/79 Ribeirao Preto cohort study - Aitsi-Selmi, A.; Batty, G. D.; Barbieri, Marco Antonio; Silva, A. A. M.; Cardoso, V. C.; Goldani, M. Z.; Marmot, M. Z.; Bettiol, Heloisa (International Journal of Obesity, 2013)