Large scale prospective meta-analysis of BMD and fracture in relation to COLIA1 Sp1 polymorphism: The GENOMOS study. - Ralston, S; Uitterlinden, A; Balcells, S; Brandi, M; Carey, A; Langdahl, B; Lorenc, R; Nogues, X; Obermayer-Pietsch, B; Reeve, J; Reid, D; Pols, H; et al. (2005)