Landi MT, Bauer J, Pfeiffer RM, Elder DE, Hulley B, Minghetti P, Calista D, Kanetsky PA, Pinkel D, Bastian BC PMID: 16809487
Schmidt BL, Pickering V, Liu S, Quang P, Dolan J, Connelly ST, Jordan RC PMID: 16807013
Waller JM, Dreher F, Behnam S, Ford C, Lee C, Tiet T, Weinstein GD, Maibach HI PMID: 16778460
Terranova F, Berardesca E, Maibach H PMID: 18489272