Hello,
I am using the package meta to plot a forest plot. My data looks like this:

```
X
               Entry Cases Ca_pos Controls Co_pos Method       Tissue
Disease     Virus Set
6  de Villiers, 2007    82     72       82     61    PCR colon/rectum
cancer       TTV   3
7  de Villiers, 2002   162     38        0      0    ISH colon/rectum
cancer       TTV   3
15         Li , 2007    37     35       37     25    ISH colon/rectum
cancer Parvo B19   3
19      Pironi, 2009     8      4        0      0    PCR colon/rectum
cancer Parvo B19   3
```

but I get this error:
```
m10 = metabin(Ca_pos,Cases,Co_pos,Controls,
              sm="OR", method="MH", fixed=FALSE, studlab=Entry,
              data=X)
forest(m10, sortvar = TE, predict = TRUE, print.tau2 = TRUE, allstudies = FALSE,
       layout = "RevMan5")
> Error in forest.meta(m10, sortvar = TE, predict = TRUE, print.tau2 = TRUE,  :
  argument 3 matches multiple formal arguments
```

What am I getting wrong? How can I solve it?

-- 
Best regards,
Luigi

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