In the article "A Law Firm in Australia Sues 3 Airlines Over an Illness" (see
http://www.nytimes.com/2001/07/18/business/18AUSS.html , registration required but free of cost or obligation), what is the proximate cause of deep-vein thrombosis? Is it poorly designed seat and seating? If so, just how wide are the economy class seats on QF, BA and KL, and how many of those seats make up a single row on a wide-body jet?