Check out the new paper by Jerry Harris, “What exactly is a nuchal ligament and who exactly has one?” This is one of those papers that fires on lots of cylinders for me: it’s interesting, it’s useful, and holy crap, the work that went into it is humbling. Note that of the 75 pages in the PDF, only about the first 20 are text, and the rest comprise two massive, exhaustively-researched and exhaustively-referenced tables. It’s free at VAMP.