Citation:Green A, Williams G, Neale R, Hart V, Leslie D, Parsons P, et al 1999
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Citation
Green A, Williams G, Neale R, Hart V, Leslie D, Parsons P, et al. Daily sunscreen application and betacarotene supplementation in prevention of basal-cell and squamous-cell carcinomas of the skin: a randomised controlled trial. Lancet 1999 Aug 28;354(9180):723-9 Available from: http://www.ncbi.nlm.nih.gov/pubmed/10475183.
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