King RD, Cunico RL, Maibach HI, Greenberg JH, West ML, Jeppsen JC PMID: 76392
Skinner WA, Tong HC, Johnson H, Parkhurst RM, Thomas D, Spencer T, Akers W, Skidmore D, Maibach H PMID: 925946
Aly R, Shinefield HI, Strauss WG, Maibach HI PMID: 409676