Research Article
Seasonal variation in serum 25-hydroxycholecalciferol concentrations in elderly South African patients with fractures of femoral neck.
Br Med J 1978; 1 doi: https://doi.org/10.1136/bmj.1.6116.826 (Published 01 April 1978) Cite this as: Br Med J 1978;1:826Article usage
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