$pmc_string = "http://www.pubmedcentral.nih.gov/tocrender.fcgi?action=cited&tool=pubmed&pubmedid=17061271"; 
 
my $ua = LWP::UserAgent->new; 
$ua->timeout(10); 
$ua->env_proxy; 
 
my $response = $ua->get($pmc_string, 
   'User-Agent' => 'Mozilla/5.0 [en] (Windows; U; Windows NT 6.0)', 
   'Accept' => 'image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*', 
   'Accept-Charset' => 'iso-8859-1,*,utf-8', 
   'Accept-Language' => 'en-US', 
); 
if ($response->is_success) { 
print $response->content; 
} 
else {die $response->status_line;}