=== HTTP code : 200 ===

HTTP/1.0 200 OK
Date: Sun, 13 Jan 2013 00:47:13 GMT
Server: Apache
Cache-Control: private
NCBI-SID: F4FC2DAC0F204111_0157SID
Content-Type: text/html; charset=UTF-8
Set-Cookie: ncbi_sid=F4FC2DAC0F204111_0157SID; domain=.nih.gov; path=/; expires=Mon, 13 Jan 2014 00:47:13 GMT
Set-Cookie: WebEnv=1LecKS%40F4FC2DAC0F204111_0157SID; domain=.nlm.nih.gov; path=/; expires=Sun, 13 Jan 2013 08:47:14 GMT
Vary: Accept-Encoding
Connection: close


Link is valid.