C. M. Burgess and R. M. Quiroga, “Assessment of the Safety and Efficacy of Poly-L-Lactic Acid for the Treatment of HIV-Associated Facial Lipoatrophy,” Journal of the American Academy of Dermatolology, Vol. 52, No. 2, 2005, pp. 233-239. doi:10.1016/j.jaad.2004.08.056
 J. K. Wildemore and D. H. Jones, “Persistent Granulomatous Inflammatory Response Injected by Injectable Poly-L-Lactic Acid for HIV Lipoatrophy,” Dermatologic Surgery, Vol. 32, No. 11, 2006, pp. 1407-1409. doi:10.1111/j.1524-4725.2006.32313.x
 M. Jouandeaud, C. Viennet, S. Bordes, B. Closs and P. Humbert, “Comparison of the Biomechanical and Biosynthetic Behavior of Normal Human Fibroblasts and Fibroblasts from Forehead Wrinkle,” IFSCC Magazine, Vol. 7, No. 2, 2004, pp. 2-6.
 J. Varani, M. K. Dame, L. Rittie L, S. E. Fligiel, S. Kang, G. J. Fisher and J. J. Voorhees, “Decreased Collagen Production in Chronologically Aged Skin: Roles of Age-Dependent Alteration in Fibroblast Function and Defective Mechanical Stimulation,” American Journal of Pathology, Vol. 168, No. 6, 2006, pp. 1861-1868. doi:10.2353/ajpath.2006.051302
 Y. H. Wei, S. B. Wu, Y. S. Ma and H. C. Lee, “Respiratory Function Decline and DNA Mutation in Mitochondria, Oxidative Stress and Altered Gene Expression during Aging,” Chang Gung Medical Journal, Vol. 32, No. 2, 2009, pp. 113-132.
 W. Zwerschke, S. Mazurek, P. Stockl P, E. Hutter, E. Eigenbrodt and P. Jansen-Durr, “Metabolic Analysis of Senescent Human Fibroblasts Reveals a role for AMP in Cellular Senescence,” The Biochemical Journal, Vol. 376, No. 2, 2003, pp. 403-411. doi:10.1042/BJ20030816
 E. Bell, B. Ivarsson and C. Merill, “Production of a Tissue-Like Structure by Contraction of Collagen Lattices by Fibroblasts of Different Proliferative Potential in Vitro,” Proceedings of the National Academy of Sciences of the USA, Vol. 76, No. 3, 1979, pp. 1274-1278. doi:10.1073/pnas.76.3.1274
 J. Varani, G. J. Fisher, S. Kang and J. J. Voorhees, “Molecular Mechanisms of Intrinsic Skin Aging and Retinoid-Induced Repair and Reversal,” Journal of Investigative Dermatolology. Symposium Proceedings, Vol. 3, No. 1, 1998, pp. 57-60.
 S. M. Lam, B. Azizzadeh and M. Graivier, “Injectable Poly-L-Lactic Acid (Sculptra): Technical Considerations in Soft-Tissue Contourning,” Plastic and Reconstructive Surgery, Vol. 118, No. 3, 2006, pp. 55S-63S. doi:10.1097/01.prs.0000234612.20611.5a
 S. Gogolewski, M. Jovanovic, S. M. Perren, J. G. Dillon and M. K. Hughes, “Tissue Response and in Vivo Degradation of Selected Polyhydroxyacids: Polylactides (PLA), Poly(3-hydrroxubutarate) (PHB), and Poly(3-hydroxybu- tarate-co-3-hydroxyvalearte) (PHB/VA),” Journal of Bio- medical Material Research, Vol. 27, No. 9, 1993, pp. 1135-1148. doi:10.1002/jbm.820270904
 T. Lombardi, J. Samson, F. Plantier, C. Husson and R. Küffer, “Orofacial Granulomas after Injection of Cosmetic Fillers. Histopathological and Clinical Study of 11 Cases,” Journal of Oral Pathology & Medicine, Vol. 33, No. 2, 2004, pp. 115-120. doi:10.1111/j.1600-0714.2004.00194.x
 S. Prahl, T. Kueper, T. Biernoth, Y. W?hrmann, A. Munster, M. Fürstenau, et al, “Aging Skin Is Functionally Anaerobic: Importance of Coenzyme Q10 for Anti Aging Skin Care,” BioFactors, Vol. 32, No. 1-4, 2008, pp. 245- 255. doi:10.1002/biof.5520320129
 H. Levinson, K. E. Koyer, G. C. Saggers and H. P. Ehrlich, “Calmodulin-Myosin Light Chain Kinase Inhibition Changes Fibroblast-Populated Collagen Lattice Contraction, Cell Migration, Focal Adhesion Formation, and Wound Contraction,” Wound Repair and Regeneration, Vol. 12, No. 5, 2004, pp. 505-511. doi:10.1111/j.1067-1927.2004.012502.x
 R. S. Adelstein, M. D. Pato, J.R. Sellers, P. de Lanerolle and M. A. Conti, “Regulation of Contractile Proteins by Reversible Phosphorylation of Myosin and Myosin Kinase,” Society of General Physiologists Series, Vol. 37, 1982, pp. 273-281.
 P. Carinci, M. Bodo, R. Evangelisti and E. Becchetti, “Involvement of the Cytoskeleton in Regulation of Collagen Synthesis and Secretion,” Italian Journal of Anatomy and Embryology, Vol. 100, Suppl. 1, 1995, pp. 65- 74.
 S. K. Donaldson, L. Hermansen and L. Bolles, “Differential, Direct Effects of H+ on Ca2+-Activated Force of Skinned Fibres from the Soleus, Cardiac and Adductor Magnus Muscles of Rabbits,” Pflugers Archive, Vol. 376, No. 1, 1978, pp. 55-65. doi:10.1007/BF00585248