The amendments to this article as provided in House Bill 601, enacted during the sixth extraordinary session of the Legislature, two thousand one, apply to all causes of action alleging medical professional liability which are filed on or after the first day of March, two thousand two.
(b) The amendments to this article provided in Enrolled Committee Substitute for House Bill No. 2122 during the regular session of the Legislature, two thousand three, apply to all causes of action alleging medical professional liability which are filed on or after the first day of July, two thousand three.