Australian Family Physician is pleased to introduce a series of articles facilitated by the Cochrane Musculoskeletal Group (CMSG). This series aims to place the findings of recent Cochrane musculoskeletal reviews in a context immediately relevant to general practitioners. Each article will present the results of CMSG reviews relevant to a particular topic, and use common general practice scenarios to show how the results can be applied in practice. The first topic considers the value of calcium supplementation in children.