Thanks, Ashley, and good morning, everyone. I'm very pleased to report that we had a strong start to the year with a solid first quarter that generated revenue growth across all four of our major product lines, including 16% growth in On-X, and 20% growth in non-GAAP revenues for JOTEC. In my closing comments, last quarter, I told you CryoLife has never been better positioned, more competitive on a larger addressable market opportunity than it does today. And these are factors that drove our solid first quarter. We have a sharp focus with our strategy, which is to call on cardiac and vascular surgeons, who treat patients with aortic disease. We execute the strategy with our well-trained 125 person direct sales force, selling highly differentiated and competitive products. We worked hard to put this strategy in place and our results demonstrate that this strategy is working. We expect this strategy to drive strong performance in 2018 and beyond. With the success of the On-X acquisition and the JOTEC integration almost complete, we are already starting to capitalize on our increasingly expanded market opportunity and to drive CryoLife's growth and profitability over the next five years. As a result, of the On-X and JOTEC acquisitions, we've increased our addressable market to approximately $2 billion and have the potential to increase it to $3 billion through our own internal R&D efforts, including those we have previously discussed regarding bringing BioGlue to China and PerClot to the U.S. We also remained very excited about the potential of JOTEC's R&D pipeline, and JOTEC's R&D capabilities to bring even more highly differentiated products to market. Moving on to our quarterly review of our 2018 key initiatives. The best way to assess our progress is to examine our accomplishments for each of our five core initiatives. As you'll hear later today, we are on track with each of these initiatives, and we are well on our way towards achieving the goals we set for CryoLife for 2018. Following my comments, Ashley will provide a detailed review of our first quarter financial results. And then, we'll open the call for any questions. The first key initiative we set for 2018 is to achieve our full year 2018 financial guidance. In the first quarter of 2018, we delivered revenues of $61.9 million representing an increase of 30% over the first quarter of 2017. Non-GAAP revenue increases were 9% compared to the first quarter of last year, and 5% on a constant currency basis. Non-GAAP revenue increases are calculated assuming that we owned JOTEC in the first quarter of 2017. Regarding our first quarter 2018 earnings, we delivered non-GAAP EPS of $0.02 per diluted share. Although it is still early, we believe our first quarter results had put us on solid footing to deliver on our full-year financial guidance. Ashley will provide more details in his commentary. Our second key initiative for the year is to complete the integration of JOTEC and deliver double-digit non-GAAP revenue growth in 2018. As I just mentioned, in the first quarter of 2018, we posted non-GAAP revenue growth of 20% in the JOTEC portfolio in the first quarter of 2017 – over the first quarter of 2017. We believe these results demonstrate a significant potential of JOTEC's highly differentiated product portfolio and overall market that is growing only in the low-single digits. We have previously communicated we expect this portfolio to take share with our highly trained direct sales force behind our highly differentiated products. We remain very excited about the prospects for the JOTEC business going forward. Our third key initiative is to continue the momentum of On-X and deliver double-digit revenue growth in 2018. We are off to a great start, as the On-X portfolio grew 16% in the first quarter relative to the first quarter of 2017, including an increase of 23% in our direct North American markets, an increase of 33% in Europe, Middle East and Africa, despite not having the AAP product line available to us in that market. As with JOTEC products, we expect to take market share in mechanical heart valves as our highly trained sales force educates more and more customers and health care professionals that On-X is the only mechanical aortic valve that is FDA approved for an INR between 1.5 and 2.0,. which showed a 65% reduction in bleeding in the PROACT clinical trial. Furthermore, we are excited to announce that our paper regarding the results of the PROACT study, demonstrating superior clinical benefits I just mentioned, has been accepted by a major scientific journal for publication later this year. Meaning that more physicians will learn about the advantages of this product and making us even more optimistic about the prospects for the On-X portfolio. Our fourth key initiative in 2018 is to continue to expand our current total addressable market opportunity. As we previously communicated, we expanded our opportunity from approximately $600 million to approximately $2 billion with the acquisition of JOTEC. We expect to expand into $3 billion with the further investment in our R&D product pipeline, including both the JOTEC product line and our legacy CryoLife product pipeline. In that regard, we continue to make significant progress in our clinical trials for BioGlue in China and PerClot in the U.S. In the BioGlue, China, clinical trial, we now have full site activation at all seven institutions, and have enrolled 82% of the patients needed to complete the trial. We remain on track for the approval of BioGlue in China in the second half of 2019. Since restarting the PerClot study under revised protocol, we now have full site activation at 21 centers, where patients are currently being enrolled in the trial. To date, we've enrolled 54% of the patients needed to complete this trial. In addition, we expect another three sites to be activated in the second quarter of 2018. Our current enrollment rate keeps us on track for an FDA approval between the second half of 2019 and the first of 2020. We are also working to file the IDE for the PROACT 10A trial. We look forward to providing more details on this exciting trial, if and when we receive FDA approval for the IDE. And finally, we remain on track to launch several next-generation JOTEC products in international markets next year. These are the same products that we will be seeking to bring to the U.S. markets, and we expect it to commence those U.S. clinical trials this time next year. Our fifth key initiative for 2018 is to complete the transition to direct sales channels for our legacy CryoLife products in Spain, Italy and Poland. I'm pleased to announce that we've achieved that objectives, and as of April 1, we began servicing customers on a direct basis for CryoLife legacy products in each of those markets. Also, on April 1, we implemented the same IT system across all key European markets to support the back office, customer service, and finance functions for those entities. We want to thank all of our employees that help to accomplish this major undertaking in a relatively short period of time. And with that, I will now turn the call over to Ashley for his financial review.