...The Allergan transaction raises leverage to the mid-3x area on a pro forma basis, but we expect leverage to decline to about 3x in 2021. Longer term, we believe AbbVie will maintain leverage in the 3x area, as the company will likely continue to make moderate-sized acquisitions to further broaden its portfolio and pipeline ahead of the loss of exclusivity on its main product, Humira, in 2023. The company still has significant product concentration even following the acquisition of Allergan. Humira makes up 39% of the company's revenue and this product faces biosimilar competition in the U.S. in 2023. Sales of Botox and other medical aesthetics products will decline this year because of a reduction in elective procedures stemming from the COVID-19 pandemic as well as tightening in consumer discretionary spending. The company's third-largest product, Botox (acquired with Allergan), is 8% of pro forma 2019 sales. We anticipate sales of the medical aesthetics business will rebound and grow...