Recent articles on Ashcroft v. Iqbal and related issues

I have blogged before on the controversy created by the Supreme Court's decision in Ashcroft v. Iqbal related to the level of proof needed to support a plaintiff's claim. See my posts from August 9, August 14, September 8, September 19 and September 21. Adding to this reading list, the Drug and Device Law Blog has posted a list of recent scholarship on the subject here.