TY - JOUR AU - Quan, T; Little, E; Quan, H TI - Elevated matrix metalloproteinases and collagen fragmentation in photodamaged human skin: impact of altered extracellular matrix microenvironment on dermal fibroblast function JO - J Invest Dermatol VL - 133 PY - 2013 L3 - PubMed-ID: 23325015 SP - 1362 EP - 1366 N1 - et al. ER -