Operator
Operator
Ladies and gentlemen thank you for standing by. Welcome to the Intuitive Surgical Q4, 2017 Earnings Release Conference Call. At this time, all participants are in listen-only mode. Later we will conduct the question-and-answer-session and instructions will be given at that time. [Operator Instructions]. As a reminder today's conference is being recorded. I would now like to turn the conference over to our first speaker, Calvin Darling, the Senior Director of Finance and Investor Relations. Please go-ahead sir.