Citation:Frieling UM, Schaumberg DA, Kupper TS, Muntwyler J, Hennekens CH 2000

Citation

Frieling UM, Schaumberg DA, Kupper TS, Muntwyler J, Hennekens CH. A randomized, 12-year primary-prevention trial of beta carotene supplementation for nonmelanoma skin cancer in the physician's health study. Arch Dermatol 2000 Feb;136(2):179-84 Available from: http://www.ncbi.nlm.nih.gov/pubmed/10677093.

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1. 2.2 Chemoprevention