*Unit of Dermatology, University of Bari, Bari, Italy †Istituto Dermopatico dell'Immacolata, IDI, IRCCS, Rome, Italy Address correspondence and reprint requests to: Gino Antonio Vena, MD, Unit of Dermatology, University of Bari, Bari, Italy, or e-mail: [email protected].
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Arpaia et al. (2004) studied this question.