Chiang A, Tudela E, Maibach HI PMID: 22912973
Dika E, Patrizi A, Fanti PA, Alessandrini A, Sorci R, Piraccini BM, Vaccari S, Misciali C, Maibach HI PMID: 22849570
Chan HP, Zhai H, Hui X, Maibach HI PMID: 22851522
Greenfield NP, Maibach H PMID: 22646507