The co-writer of this book, Vidyamala Burch, was taught by Kabat Zinn.
Danny Penman works with Mark Williams, the guy who taught mindfulness to Ruby Wax.
http://franticworld.comI think what sets both Burch and Penman apart when it comes to mindfulness and pain is that both have experienced catastrophic accidents. Reading the accounts of what happened to them is actually quite alarming.