Overview/summary piece of Andrew Gelman's January 5 blogpost, "PACE study and the Lancet: Journal reputation is a two-way street":
http://www.meaction.net/2016/01/06/columbia-professor-says-pace-damaging-lancets-reputation/
http://www.meaction.net/2016/01/06/columbia-professor-says-pace-damaging-lancets-reputation/