2019 was a great year for our iTero business with total revenues up 38.5% year-over-year. Cumulatively, over 20.5 million orthodontic scans and 4.7 million restorative scans have been performed with iTero scanners. Use of the iTero scanners for Invisalign case submission continues to grow and remains a positive catalyst for Invisalign utilization. For Q4, total Invisalign cases submitted with a digital scanner in the Americas increased to 79.5% from 73.5% in Q4 of last year. International scans increased to 64.7%, up from 57.5% in the same quarter last year.