It was a warm spring day and Torsten Ketzel was cutting humus for the roses in the back of his garden. As he loaded a shovelful of dirt into the wheelbarrow, he suddenly felt strangely weak and lethargic. The passionate golfer was surprised at his poor fitness level and resolved to train more soon. He continued to work leisurely for another hour or two when terrible pain shot through him like the blow of an axe: “It started in the jaw – maybe the wisdom tooth, I thought. But then the strong burning sensation quickly descended, from the larynx to the sternum to the stomach,” the pharmacist recalls. “I was scared to death.”