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<p class="MsoNormal"><span style="color:black">Dear PRad collaborators:<o:p></o:p></span></p>
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<span style="color:black">Marc Vanderhaeghen and I have written a review paper recently on the proton charge radius. It is now<span class="apple-converted-space"> </span></span><span style="font-family:-webkit-standard;color:black">available at:<br>
<a href="https://urldefense.com/v3/__http:/arxiv.org/abs/2105.00571__;!!OToaGQ!8QOhGQhzd1hlqHMsrndA8UHM1_GEO3nxfm2ETn0JsHPe6L1UnoYkw2v3IDN7fbnMqA$" title="https://urldefense.com/v3/__http://arxiv.org/abs/2105.00571__;!!OToaGQ!8QOhGQhzd1hlqHMsrndA8UHM1_GEO3nxfm2ETn0JsHPe6L1UnoYkw2v3IDN7fbnMqA$"><span style="color:#0563C1">http://arxiv.org/abs/2105.00571</span></a></span><span style="color:black"><o:p></o:p></span></p>
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<span style="color:black">Your comments and suggestions for improvement are greatly appreciated.<span class="apple-converted-space"> </span><o:p></o:p></span></p>
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<span style="color:black">Best, Haiyan<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">=======================================================================<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> Haiyan Gao, Ph.D.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> Henry Newson Professor
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> Department of Physics<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> 2313 French Family Science Center<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> Duke University<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> Phone: (919)-660-2622 (919)681-1935 (fax)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> gao@phy.duke.edu<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> http://www.tunl.duke.edu/~mep<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> Mailing address: Dept. of Physics<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> BOX 90305<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> Duke University<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> Durham, NC 27708<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> U.S.A.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">=========================================================================<o:p></o:p></span></p>
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