Thanks, John. And good morning, everyone. The first quarter financial results are quite encouraging, and as John mentioned, position us well to deliver strong results for the full-year. Revenue in the first quarter of $759 million grew 7.6% year-over-year, driven by low double-digit chronic therapy growth and relatively flat acute revenue growth after the impact of ASP declines in certain therapies. Overall referral patterns are returning to normal. And for many of our chronic therapies, we are seeing solid year-over-year growth, including therapies for MS, myasthenia gravis and certain chronic inflammatory conditions. As I mentioned on the Q4 call, we are seeing some ASP headwinds in a handful of categories, including antibiotics, which impacted us by a little under a full point of growth in the quarter. That was incorporated into our guidance, and we anticipate that impact to sustain for the balance of the year. Nonetheless, we are clearly pleased with the overall revenue results for the quarter. Gross profit represented 21.8% of revenue and grew 4.7% year-over-year. Gross margin was affected by therapy mix, with chronic driving the top line growth in the quarter. And spending of $120 million was down 7% versus prior year and dropped to 15.8% of revenue, down from over 18% in the first quarter of 2020. Note that last year we were still ramping up efforts to harvest spending synergies, so the improvement reflects our progress in driving SG&A savings post-merger as well as spending actions in response to the pandemic. Adjusted EBITDA of $52.2 million in the quarter represented 6.9% of revenue and up 30% year-over-year. And the EBITDA margin of 6.9% expanded 118 basis points over Q1 of 2020. Again, the spending comp from prior year helped with the margin expansion, but nonetheless we continue to drive leveraged growth on our scalable infrastructure. And as we've consistently communicated, the first quarter is typically the softest quarter of the year in terms of profit margins and dollar generation. The results are consistent with our expectations and again serve as a very strong foundation for the balance of the year. In the first quarter, we generated over $18 million in cash flow from operations, which translated into more than $10 million in free cash flow. We finished the quarter with over $109 million in cash and no borrowings on our $175 million revolver. As we talked about on the last call, in the first quarter, we dramatically improved our leverage profile with the extinguishment of all second lien debt and refinancing of our larger first lien debt tranche at a spread of 375 basis points. This simplifies our capital structure, maintains our favorable covenant-light terms and 2026 maturity profile while also reducing our cash interest burden. We're also encouraged by the recent credit rating upgrades by both Standard & Poor's and Moody's as an independent affirmation of the progress we've made. At the end of the quarter, our net leverage profile was 4.5 times, down 0.3 times from year-end and well on our way to our stated goal of less than 4 times. We also announced this morning that subsequent to the first quarter and obviously excluded from all Q1 financial disclosures, we invested $18.5 million to acquire certain infusion assets from BioCureRX. We acquired the assets at a high single-digit multiple of the enterprise's EBITDA run rate and anticipate a quick and efficient integration in the second quarter. We effectively acquired certain commercial resources and referral relationships, so I expect the integration to be seamless over the next few months. Tack on John's comments, we are investing more time on inorganic opportunities. And while limited in size, the BioCure transaction signifies our appetite to become more active on the M&A front. And we will be thoughtful and intentional in our efforts going forward. And we are confident that we can execute our M&A strategy concurrent efforts to further improve our leverage profile, given our cash flow generation and access to capital. Finally, in this morning's press release, we have reaffirmed our full-year guidance, with the exception of our expectation for adjusted EBITDA which we have raised to a range of $248 million to $260 million for the year, reflecting the partial year impact of the BioCure acquisition and our increased confidence after the first quarter. Consistent with previous years, we will continue to assess and update our full-year guidance throughout the year. And with that, we'll open up the call for Q&A. Operator?