(Press Democrat) Danielle Rizzos son is screaming. He is planted in the middle of the lobby of his elementary school clinging to rainbow-colored blocks as she gently explains that she is here - off schedule in the middle of the day - to take him to a doctors appointment. But the first-grader is not listening. Happy Meal he repeats over and over again. Happy Meal! His little brother who is also going to the appointment is nearby not moving. Rizzo is relieved that the two of them are not melting down at the same time which happens all too often and firmly guides them out the door. Rizzos children ages 7 and 6 were at the center of one of the most ethically complex legal cases in the modern-day fertility industry. Three years ago while researching treatment options for her sons Rizzo says she made an extraordinary discovery: The boys are part of an autism cluster involving at least a dozen children scattered across the United States Canada and Europe all conceived with sperm from the same donor. Many of the children have secondary diagnoses of ADHD dyslexia mood disorders epilepsy and other developmental and learning disabilities.