Wester RC, Hartway T, Maibach HI, Schell MJ, Northington DJ, Culver BD, Strong PL PMID: 10050913
Wester RC, Hui X, Maibach HI, Bell K, Schell MJ, Northington DJ, Strong P, Culver BD PMID: 10050912
Manuskiatti W, Schwindt DA, Maibach HI PMID: 9669115