How to calculate means (SD) from various values for a meta-analysis

#1
Hey,

For a "meta-analysis" i would like to sum up the result from 6 studies. Still values stated in these studies are median (IQR), mean (SD), mean (range), mean (95% CI). Do I have a chance to calculate a mean +/-SD based on these values?

Thank you for your help in advance!

Kind regards,

Sebastian