A man went into the Sisters of Mercy Hospital for coronary surgery. The operation was successful, and he soon regained consciousness. He came round to find one of the nuns sitting by his bed and gently patting his hand. She told him: "Mr Foster, you are going to be just fine. We do have to know, however, how you intend to pay for your stay here. Are you covered by insurance?" "No, I'm not," replied the patient. "Can you pay in cash?" "I'm afraid I can't." "Do you have any close relatives who mig…