GHR: http://ghr.nlm.nih.gov/condition/treacher-collins-syndrome
OMIM: http://www.omim.org/entry/154500
NORD: https://rarediseases.org/rare-diseases/treacher-collins-syndrome/
Orphanet: http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=GB&Expert=861
NIH: https://rarediseases.info.nih.gov/gard/9124/treacher-collins-syndrome/resources/1
Wikipedia: https://en.wikipedia.org/wiki/Treacher_Collins_syndrome
OMIM: http://www.omim.org/entry/154500
NORD: https://rarediseases.org/rare-diseases/treacher-collins-syndrome/
Orphanet: http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=GB&Expert=861
NIH: https://rarediseases.info.nih.gov/gard/9124/treacher-collins-syndrome/resources/1
Wikipedia: https://en.wikipedia.org/wiki/Treacher_Collins_syndrome