Fung MA, Frieden IJ, LeBoit PE, Berger TG, Epstein E, Kay D, Van SL, Williams ML PMID: 8915335
Fung MA, Frieden IJ, LeBoit PE, Berger TG, Epstein E, Kay D, Van SL, Williams ML PMID: 8915335
Manuskiatti W, Maibach HI PMID: 8957637
Penagos H, Jimenez V, Fallas V, O'Malley M, Maibach HI PMID: 8957640