Prizant TL, Lucky AW, Frieden IJ, Burton PS, Suarez SM PMID: 8651717
Schmidt E, Bastian B, Dummer R, Tony HP, Bröcker EB, Zillikens D PMID: 8818181
Ghadially R, Brown BE, Hanley K, Reed JT, Feingold KR, Elias PM PMID: 8618040