Interaction data shared by author Colt W. Cook with Jorrit Poelen by email on March 20, 2013.

related article / master thesis:
 http://repositories.lib.utexas.edu/handle/2152/ETD-UT-2012-08-6285

blogs:
 http://www.goodreads.com/author_blog_posts/3791210-tongue-eating-fish-parasites-never-cease-to-amaze
 http://phenomena.nationalgeographic.com/2013/02/28/tongue-eating-fish-parasites-never-cease-to-amaze/

