Is 2,3,5-pyrroletricarboxylic acid in hair a better risk indicator for melanoma than traditional epidemiologic measures for skin phenotype?

Rosso S, Zanetti R, Sánchez MJ, Nieto A, Miranda A, Mercier M, Loria D, Østerlind A, Greinert R, Chirlaque MD, Fabbrocini G, Barbera C, Sancho-Garnier H, Lauria C, Balzi D, Zoccola M; Helios Working Group.

Am J Epidemiol 2007; 165: 1170-7.

http://www.ncbi.nlm.nih.gov/pubmed/17339384