Please show Stata code (not R code). Use a loop to create temporary variables that store the values of the logarithm (base e) of the laboratory variables (i.e. tcresult, tgresult, hdresult). Store the mean value and corresponding standard deviation of these newly created variables in corresponding macros. For each laboratory measure, display the sentence "Mean (standard deviation) of the logarithm of VAR = XX.X (Y.Y)", where VAR is the laboratory variable, XX.X is the mean and Y.Y is the standard deviation.