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Serum concentrations of 25-hydroxyvitamin D and immunoglobulins in an older Swiss cohort: results of the Senior Labor Study

Benjamin Sakem, Cristina Nock, Zeno Stanga, Pedro Medina, Urs E Nydegger, Martin Risch and Lorenz Risch*

BMC Medicine 2013, 11:176  doi:10.1186/1741-7015-11-176

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