Thanks, Dan. We reported total net product revenues of $31.3 million for the fourth quarter of 2018, an increase of 41% over the quarter of 2017. Total net revenues for the quarter included $25.1 million of MACI and $6.2 million of Epicel net revenue compared to $16.1 million of MACI and $6.1 million of Epicel net revenue respectively in the fourth quarter of 2017. This represents revenue growth of 56% and 2% from MACI and Epicel, respectively. Our full year 2018 net product revenues were $90.9 million, or approximately $900,000 above the top end of our updated revenue guidance, which represented full year product revenue growth of 54% and 23% for MACI and Epicel, respectively, versus 2017. Please note that 2017 product revenues and comparisons exclude $1.2 million in revenue related to the Company's license agreement with ICT. Gross margins for the fourth quarter of 2018 improved to 72% versus 64% in the fourth quarter of 2017, and for the full year, increased to 64% versus 53% in 2017. Total operating expenses for fourth quarter of 2018 were $16.7 million compared to $13.8 million for the same period in 2017. The increase was primarily due to $1.4 million in service fees paid to MACI pharmacy distributors and incremental $1.2 million in employee-related expenses associated with the expanded MACI sales force, and an incremental $500,000 in stock-based compensation expense. Non-GAAP adjusted EBITDA was $7.7 million for the fourth quarter compared to $2.2 million in the fourth quarter of 2017, for details reconciling non-GAAP measures to the table in this morning's press release. Vericel's net income for the quarter ended December 31, 2018 was $5.2 million or $0.11 per share on a fully diluted basis compared to approximately $300,000, or $0.01 per share for the fourth quarter of 2017. As of December 31, 2018, the Company had $82.9 million in cash and short-term investments compared to $26.9 million in cash at December 31, 2017. We ended the year with a very clean balance sheet, having retired all outstanding debt in the fourth quarter and with all, but approximately 27,000 warrants have either converted or expired. We announced earlier this morning that we expect the total net product revenues for the full year 2019 to be in the range of $108 million to $112 million. We expect the majority of revenue growth for the year to be degenerated by MACI with the Epicel growth in the single-digits. We expect revenue growth to continue to drive increased margins. In 2019, we expect the marginal cost of goods for MACI and Epicel to be approximately 20%, resulting in about 80% of marginal revenue over 2018 revenues to contribute to gross profit. Likewise, given our premium products and concentrated call points, we expect approximately 50% of marginal revenue over 2018 revenues to contribute to adjusted EBITDA. Quarterly seasonality, which impacts both revenues and margins is expected to follow the same pattern as 2018. That completes my finance review. Now, I'll turn the call over to Nick.