title: Can't work metabin function
body: <p>I am trying a meta-analysis for the first time on R. I would like to use the function metabin. However, it will not work for my data set. And it will also not work for simple input such as</p>
  
  <pre><code>metabin(10, 20, 15, 20, sm = "OR")
  </code></pre>
  
  <p>All I get is</p>
  
  <pre><code>Error in metabin(10, 20, 15, 20, sm = "OR") : 
    could not find function "metabin"
  </code></pre>
  
  <p>I have installed the meta package so do not know what I can do. Please help. 
  Thank you so much!</p>