Dear Stata Users,

I am working in a meta analysis of prior 20 studies. In several studies I have collected more than one effect size. I would like to use meta forestplot and meta summarize by study or author(s), using mean of the effect sizes and standard erros per study/author(s). It appears that this commands do not have de option "by". Is there a way to obtain these statistics and plot provided these commands by study?

I appreciate any help or direction.
Kind regards
Mário Marques