If, like the FutureLawyer, your are a grammar policeman, you spend a lot of time and effort dealing with people and businesses for whom English grammar is a foreign concept. But, I am also a heart patient, so shocks to the system can be more dangerous for me than for others. If I were faced with this sign at my cardiologist’s office, I might have a cardiac event then and there. This is a real sign at a real cardiologist office. You might want to check whether the Doctor directed the making of the sign, or if the person who wrote it is involved in your treatment. I need to sit down and rest for a while.