The WSRS is a valid and reliable instrument for quantitative assessment of facial skin folds, with good inter- and intra-observer consistency. By allowing objective and reproducible grading of data, the WSRS should prove a useful clinical tool for assessi
Objective To investigate the efficacy of poly (L-lactic acid) application in the rejuvenation of hands, and to analyzethe safety of its application. Methods two subjects with aging problems of the hands were given subcutaneous injections of poly-L-lactic