How to print Entity Reference field?

I have a Entity Reference field in the Profile, that I want to print, but nothing comes out of it, what am I doing wrong?

<?php
global $user;
$uid = user_load($user->uid);
$main = profile2_load_by_user($uid, 'main');
?><?php
print render($main->field_avdelning_branch['und'][0]['value']); 
?>