<?xml version="1.0"?>
<oembed><version>1.0</version><provider_name>Department of Medicine</provider_name><provider_url>https://www.med.unc.edu/medicine</provider_url><author_name>Deb Hepp</author_name><author_url>https://www.med.unc.edu/medicine/news/author/debbhepp/</author_url><title>Medicine Grand Rounds, Joseph Rossi and William Powers, "PFO Closure to Reduce Stroke Risk -- How Compelling Is the Evidence?" | Department of Medicine</title><type>rich</type><width>600</width><height>338</height><html>&lt;blockquote class="wp-embedded-content" data-secret="LlR1rtnAFq"&gt;&lt;a href="https://www.med.unc.edu/medicine/event/nov-30/"&gt;Medicine Grand Rounds, Joseph Rossi and William Powers, &#x201C;PFO Closure to Reduce Stroke Risk &#x2014; How Compelling Is the Evidence?&#x201D;&lt;/a&gt;&lt;/blockquote&gt;&lt;iframe sandbox="allow-scripts" security="restricted" src="https://www.med.unc.edu/medicine/event/nov-30/embed/#?secret=LlR1rtnAFq" width="600" height="338" title="&#x201C;Medicine Grand Rounds, Joseph Rossi and William Powers, &#x201C;PFO Closure to Reduce Stroke Risk &#x2014; How Compelling Is the Evidence?&#x201D;&#x201D; &#x2014; Department of Medicine" data-secret="LlR1rtnAFq" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"&gt;&lt;/iframe&gt;&lt;script type="text/javascript"&gt;
/* &lt;![CDATA[ */
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&amp;&amp;d.addEventListener&amp;&amp;"undefined"!=typeof URL&amp;&amp;(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&amp;&amp;!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i&lt;o.length;i++)o[i].style.display="none";for(i=0;i&lt;a.length;i++)s=a[i],e.source===s.contentWindow&amp;&amp;(s.removeAttribute("style"),"height"===t.message?(1e3&lt;(r=parseInt(t.value,10))?r=1e3:~~r&lt;200&amp;&amp;(r=200),s.height=r):"link"===t.message&amp;&amp;(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&amp;&amp;n.host===r.host&amp;&amp;l.activeElement===s&amp;&amp;(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r&lt;s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document);
/* ]]&gt; */
&lt;/script&gt;
</html><thumbnail_url>https://www.med.unc.edu/medicine/wp-content/uploads/sites/945/2018/12/william-powers.jpeg</thumbnail_url><thumbnail_width>150</thumbnail_width><thumbnail_height>188</thumbnail_height><description>Recent clinical trials have investigated the efficacy of mechanical closure of patent foramen ovale (PFO) for prevention of recurrent stroke. We will review the epidemiological evidence linking PFO and stroke, the methodology and results of clinical trials of secondary stroke prevention in patients with PFO, and the techniques for mechanical closure of PFO. William J. &hellip; Read more</description></oembed>
