Retraction Note to: Aging Clin Exp Res, Vol. 21, No. 4/5 277–281 https://doi.org/10.1007/BF03324916

The Editor-in-Chief has retracted this article [1] because the three studies included in the meta-analysis [2, 3, 4] (cited as references 16, 17, 18) have been retracted due to concerns regarding the data, which has rendered the results of this meta-analysis invalid.