Thanks, Mike. Today, I'll review the highlights of our performance for the fourth quarter and full-year 2018, and then walk through our 2019 outlook. As Rick mentioned, we have completed another year of outstanding performance, delivering top and bottom line growth that ranks AbbVie among the very-top of our industry peers. We reported adjusted earnings per share of $7.91, up more than 40% compared to 2017 and $1.44 above the midpoint of our initial expectations for the year. For the year, adjusted revenues were $32.7 billion, up 15.2% on an operational basis, excluding a nearly 1% favorable impact from foreign exchange. For the fourth quarter, total revenues were $8.3 billion, an increase of 8.3% on an operational basis, excluding a 1% unfavorable impact from foreign exchange. This performance reflects double-digit underlying volume growth offset by approximately 2.5 points of negative price. Global sales of HUMIRA were $4.9 billion in the quarter, up 1.4% operationally. In the U.S., HUMIRA sales increased 9.1% compared to the prior year, reflecting high-single-digit volume growth plus price. Wholesaler inventory levels remained below half a month in the quarter. International HUMIRA sales were $1.3 billion in the quarter, down 14.8% operationally, reflecting the introduction of biosimilar competition across Europe and other international markets. Global HUMIRA sales for the full -year 2018 were $19.9 billion, reflecting operational sales growth of 7.4%. Full-year sales of HUMIRA in the U.S. grew more than 10%, and international HUMIRA sales approached $6.3 billion, performing in line with our expectations. Hematologic oncology global sales were $1.1 billion in the quarter, up 50.3% on an operational basis, driven by the continued strong growth of both IMBRUVICA and VENCLEXTA. In the quarter, IMBRUVICA net revenues were $1 billion, primarily driven by continued uptake in the frontline CLL segment. VENCLEXTA revenues were $124 million in the quarter, driven by continued uptake in the second line plus setting, as a result of our midyear approval in the broad relapsed/refractory CLL segment. For the full-year, our hem-onc global revenues were $3.9 billion, up 45.8% on an operational basis. Global HCV sales for the fourth quarter were $862 million. MAVYRET continues to perform well, holding roughly 50% market share globally. For the full-year, HCV sales exceeded $3.6 billion and was above our previous communicated guidance. We also saw continued double-digit operational sales growth for both DUODOPA and CREON. Turning now to the P&L profile for the fourth quarter. Adjusted gross margin was 79.8% of sales, up 80 basis points compared to the prior year. This was inclusive of the year-over-year benefit related to the termination of certain royalties with HUMIRA, partially offset by the dilutive impact of partnership accounting. Adjusted R&D was 16.5% of sales, supporting our pipeline programs in oncology, immunology, and other areas. Adjusted SG&A was 21.6% of sales, an increase of 30 basis points versus the prior year, reflecting continued investment in our on-market products as well as investment in advance of several upcoming product launches. The adjusted operating margin was 41.7% of sales in the fourth quarter, an improvement of over 100 basis points versus the prior year. Net interest expense was $319 million and the adjusted tax rate was 9.1% in the quarter. Fourth quarter, adjusted earnings per share, excluding specified items were $1.90, up 28.4% year-over-year. In the quarter, we recorded a net charge of $2.75 per share, related to the partial impairment of intangible assets, acquired as part of the Stemcentrx acquisition. The net after-tax impact of this impairment and the related adjustment to contingent consideration liabilities was $4.1 billion. This one-time net charge has been excluded from our adjusted EPS results. As we look ahead to 2019, our full-year adjusted EPS range is $8.65 to $8.75, reflecting growth of 10% at the midpoint. Excluded from this guidance is $1.26 of known intangible amortization and specified items, as well as non-cash charges for contingent consideration adjustments related to the expected approval of risankizumab in the first half of the year. On the topline, in 2019, we expect revenue growth of approximately 1% on an operational basis. At current rates, we would expect foreign exchange to have just less than 1% unfavorable impact on reported sales growth. Included in our revenue guidance are the following assumptions for our key products. In 2019, we expect U.S. HUMIRA to once again be an important contributor to our performance, with revenue growth of approximately 7%. We expect 2019 international HUMIRA to be down approximately 30% on an operational basis, reflecting the impact of biosimilar competition outside of the U.S. For our hem-onc franchise, we expect global revenues of approximately $5.1 billion, contributing more than $1 billion of growth; this includes IMBRUVICA global revenues to AbbVie approaching $4.4 billion with U.S. sales growth of approximately 21%. For VENCLEXTA, we expect sales of approximately $725 million. We expect global HCV sales of approximately $3.3 billion in 2019, with roughly flat performance in the U.S. and international sales of approximately $1.7 billion. For ORILISSA, we expect sales of approximately $200 million. We are pleased with the early stages of the launch, and expect demand to ramp, given recent increased formulary access, which now stands at approximately 70%. For CREON, we expect approximately 10% sales growth; for DUODOPA, we expect revenues approaching $500 million; for LUPRON, SYNTHROID and SYNERGIST, we expect sales to be roughly flat year-over-year. And for AndroGel, we are forecasting sales of approximately $100 million, following the entry of generic competition for AndroGel 1.62. Finally, we are expecting a regulatory decision for both risankizumab and upadacitinib, later this year. We will provide specific guidance for these assets following their respective approvals. Looking at the P&L for 2019. We are forecasting an adjusted gross margin ratio of above 82.5%. This profile reflects a year-over-year benefit of HUMIRA royalty reduction, as well as the impact of partnership accounting. We are forecasting R&D expense of approximately 15.5% of sales, reflecting funding actions supporting all stages of our pipeline. We are forecasting SG&A to be approximately 20.5% of sales in support of five major product or indication launches. For 2019, we e are forecasting an operating margin ratio of just above 46.5%, roughly 200 basis points above prior year, inclusive of the required investment on our new product launches. We expect net interest expense approaching $1.3 billion, and we model a non-GAAP tax rate, just above our full-year rate in 2018. Regarding our first quarter outlook, we expect adjusted earnings per share between $2.05 and $2.07, excluding approximately $0.31 of specified items. We anticipate first quarter revenue of approximately $7.7 billion. At current rates, we would expect foreign exchange to have an unfavorable impact on reported sales growth of approximately 2% in the first quarter. For U.S. HUMIRA, we expect sales of approximately $3.2 billion; we expect international HUMIRA sales of approximately $1.2 billion, assuming current exchange rates. And for IMBRUVICA, we expect sales of approximately $1 billion. Moving now to the P&L for the first quarter, we are forecasting an adjusted gross margin ratio in line with full-year guidance and spending levels slightly favorable relative to the full-year profile due to investment timing. We expect an adjusted tax rate, just below 8% in the first quarter, lower than our expected full year rate, reflecting the fact that the tax impact of equity compensation is most pronounced in the first quarter of each year. In summary, AbbVie has once again delivered an excellent quarter and full-year results. We’ve driven top tier revenue and EPS growth while also advancing our strategic priorities and our pipeline. And our strong growth prospects have enabled us to position the business for yet another year of double-digit earnings growth in 2019, despite biosimilar dynamics and the required investments to support several major product and indication launches. We are very pleased with AbbVie’s strong performance. And with that, I'll turn the call back over to Liz.