$res=get_post_custom_values($key = "researchid", $post_id=0);
if ($res[0]!=""){?>
}?>
$el=get_post_custom_values($key = "elibrary", $post_id=0);
if ($el[0]!=""){?>
}?>
$gog=get_post_custom_values($key = "scholargoogle", $post_id=0);
if ($gog[0]!=""){?>
}?>
$rg=get_post_custom_values($key = "researchgate", $post_id=0);
if ($rg[0]!=""){?>
}?>
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