Gilman SD, Gee SJ, Hammock BD, Vogel JS, Haack K, Buchholz BA, Freeman SP, Wester RC, Hui X, Maibach HI PMID: 9726169
Elias PM, Cullander C, Mauro T, Rassner U, Kömüves L, Brown BE, Menon GK PMID: 9734820
Aly R, Bayles C, Bibel DJ, Maibach HI, Orsine CA PMID: 9721393
Nakada T, Hostýnek JJ, Maibach HI PMID: 9746185