Coaching is training or development in which a person called a coach supports a learner in achieving a specific personal or professional goal. The learner is sometimes called a coachee.
From Wikipedia: Tetralogy of Fallot (TOF) is a congenital heart defect which is classically understood to involve four anatomical abnormalities (although only three of them are always present). It is the most common cyanotic heart defect, representing 55-70%, and the most common cause of blue baby syndrome..
How common are congenital heart defects? Congenital heart defects are the most common birth defects. Nearly one of every 100 babies is born with a CHD. Each year approximately 40,000 babies are born in the United States with a congenital heart defect. (Source: CHPHC) Approximately two to three million individuals are thought to be living in the United States with CHDs.