Medical students are taught - "When you hear the sound of hooves, think horses, not zebras." 'Horses' are common ailments, 'zebras' are rare diseases. is a zebra. The problem is that doctors have forgotten that zebras DO exist.
black and white tiger! if only it was a poster! i could make a poster and have a bunch of cool animal pictures on one poster! or print a bunch of pictures of cool animals and put em in a section of my wall!