Thank you, Heather. I want to take a few minutes to expand in more detail on some of the comments I made in my opening remarks, and then I will open the call for questions. With regard to the changes we made in our cardiac monitoring business, I want to walk you through the rationale that led us to employ a more comprehensive approach than you have seen from CardioNet in the past. We possess the industry's largest direct sales force and a suite of industry-leading monitoring products. Previously, we directed many of our resources toward the promotion of MCOT, given the outstanding clinical and economic benefit it provides patients, doctors and payers. However, much of the testing that is done today still utilizes event and Holter monitors for a variety of reasons. We firmly believe that MCOT is the gold standard for monitoring and we will continue to make that case. However, we will now more actively pursue the prescriptions written for event and Holter monitors as well. We are confident that we can increase our share of those prescriptions while still communicating the superiority and cost effectiveness of MCOT. We do expect the market to migrate over time to MCOT, but in the interim, we will seek to capture a larger share of the entire market. To help us effectively take share in event monitoring, we introduced our wireless event during the fourth quarter. We believe our wEvent is the most advanced wireless event product in the market. Thus far, the product is receiving widespread market support and has proven to be an excellent complement to MCOT, especially in those areas where insurance coverage is a challenge. For 2013, we have fully aligned the sales force and senior management compensation structure with this more comprehensive strategy. Where in the past, MCOT was the centerpiece of all commission and bonus plans, in 2013, we strike a far more balanced approach. I'd now like to touch on another example of our strategy in action. One of the pillars I discussed earlier was to identify diagnostic markets that would benefit from the application of our wireless platform and proprietary technology, and to partner where appropriate. Earlier today, we announced a partnership with AirStrip Technologies. This is an exciting alliance, as Airstrip has made tremendous progress primarily in the hospital point of care setting with the cardiology platform. By interfacing our 2 systems, we will enhance the data package that is being delivered directly to commissions, smartphones and tablets in a user-friendly format. For the first time, Airstrip will be pulling data from patients being monitored in an outpatient setting, dramatically improving the clinician's ability to deliver rapid care. These are exactly the kind of solutions that make the most sense, given the macro trends in today's market. The aging of the population alone dictates the need for a wider use of technology-based solutions and specifically, remote monitoring solutions in order to leverage clinical resources. Our 2 companies are committed to completing the interface work and having a market-ready solution by mid-year. We also expect to continue to develop cutting-edge products in order to build on our leadership position in a remote monitoring market. However, this is another area where we have the opportunity to gain strength by marrying our internal development efforts with those of other companies. Companies that have expertise in technology development that could be leveraged to improve product effectiveness, lower cost and decreased product development cycles. It is a safe bet that you'll hear more about these activities in the near future. On our last call, I talked about the results of a study that examined insurance claims data in an attempt to validate the return on investment associated with using MCOT versus event or Holter. This analysis is currently being reviewed for publication. As a reminder, the study found that compared with an event monitor, the use of MCOT lowers inpatient costs by a staggering $9,000 per patient in the first year alone. This is a minimum of a 12x to 13x return on investment associated with using MCOT. In terms of our Research Services business, our focus in the quarter was to complete the integration of Cardiocore and refine the growth plan for 2013. During the first full quarter post the Cardiocore acquisition, the business performed better than expected. Given our pipeline and backlog, we anticipate continued growth in this division. Additionally, we will be looking to make further investments which will enhance our position outside of the United States, create an advantage in terms of equipment cost and differentiation and add services to complement the current core lab offering. In summary, we closed out the year with excellent momentum and positive trends. As we move further into 2013, our focus is to: grow the patient services business by positioning a comprehensive CardioNet suite of products, achieving further diversification in terms of products, payor and patient acquisition sources and accelerating these efforts to external partnerships; continue to expand the Research Services business through pipeline pull-through and additional investments; continue to look for ways to drive efficiencies throughout the organization, reducing our overall cost structure, which will provide for greater reinvestment into the business; continue to focus on gaining broader reimbursement coverage for MCOT technology by publishing and leveraging the claims data analysis, providing evidence of a 12x to 13x ROI in the first year; and continue to evaluate opportunities, both through internal development and M&A, to leverage our infrastructure into adjacent markets, both domestically and abroad. By executing on this aggressive agenda, 2013 will be a great year for CardioNet. We will now pause and open the call to questions. Operator, we are ready for our first question.