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2. The psychology of appearance in the elderly;Kligman;Dermatol Clin,1986
3. The ages of man and their dermatosis;Graham-Brown,1992
4. Structural changes in aging human skin;Montagna;J Invest Dermatol,1979
5. Structural alterations in exposed and unexposed aged skin;Lavker;J Invest Dermatol,1979