AU - Kafi R, Kwak HR, Schumacher WE, et al TI - IMprovement of naturally aged skin with vitamin a (retinol) PT - JOUR DP - 2007 TA - Archives of Dermatology pages = {606-612}, VI - 143 IP - 5 AID - 10.1001/archderm.143.5.606 [doi] 4100 - http://dx.doi.org/10.1001/archderm.143.5.606 SO - Archives of Dermatology May 1, 2007 143(5):606