Vitamin D insufficiency: a risk to vertebral fractures in community-dwelling elderly women - Lopes, Jaqueline B; Danilevicius, Camille F; Takayama, Liliam; Caparbo, Valeria de Falco; Scazufca, Márica; Bonfá, Eloísa Silva Dutra de Oliveira; Pereira, Rosa Maria Rodrigues (Maturitas, 2009)