| Cache-Control | public, max-age=599, stale-while-revalidate=600, stale-if-error=600 |
| Content-Encoding | gzip |
| Content-Md5 | sjDpZb1+tqbuJdBAzdWBIA== |
| Content-Type | text/html; charset="UTF-8" |
| Etag | "b230e965bd7eb6a6ee25d040cdd58120" |
| Expires | Sat, 7 Nov 2015 00:12:38 GMT |
| Server | openresty |
| X-B3-Spanid | 36117497802 |
| X-B3-Traceid | 36425008311 |
| X-Cf-Requestid | 3641a82e-1cdb-46ea-713f-7a4218d67683, b075a5b3-fbc8-433c-6509-db81e4843ea0 |
| X-Orig-Host | wjso.biomedcentral.com |
| Fastly-Debug-Digest | d5e3c58d09af9dd20159c759fd531e0aaf2dafa1921334d6d628adcf27c7ccd6 |
| Accept-Ranges | bytes |
| Via | 1.1 varnish, 1.1 varnish |
| Age | 860 |
| Connection | keep-alive |
| X-Served-By | cache-ams4124-AMS, cache-atl6232-ATL |
| X-Cache | HIT, HIT |
| X-Cache-Hits | 1, 1 |
| X-Timer | S1446911339.061959,VS0,VE97 |
| Vary | Accept-Encoding |