=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 302 Found
Date: Tue, 13 Feb 2018 22:23:44 GMT
Server: Apache/2.4.7 (Ubuntu)
X-Powered-By: PHP/5.5.9-1ubuntu4.21
location: /article/?a=3007
Connection: close
Content-Type: text/html

HTTP/1.1 200 OK
Date: Tue, 13 Feb 2018 22:23:44 GMT
Server: Apache/2.4.7 (Ubuntu)
X-Powered-By: PHP/5.5.9-1ubuntu4.21
Connection: close
Content-Type: text/html

Request headers
================
HEAD /article/?a=3007 HTTP/1.1
Host: hir.harvard.edu
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: */*
Referer: http://51.15.134.16
Connection: close


Link is valid.