An attempt will be made to analyze them according to the present state of our knowledge of the mechanics of head, and particularly ear, development. Finally, a short review of the ear changes in certain other double monsters will be given. [jamanetwork.com]

PMID: 30756395 Current perspectives on the etiology of agnathia-otocephaly. Gekas J, Li B, Kamnasaran D. Gekas J, et al. Eur J Med Genet. 2010 Nov-Dec;53(6):358-66. doi: 10.1016/j.ejmg.2010.09.002. Epub 2010 Sep 16. Eur J Med Genet. 2010. [pubmed.ncbi.nlm.nih.gov]