FILE - In this Feb. 22, 2019 file photo, a man crosses a pedestrian bridge at Children's Hospital in Los Angeles. Children's Hospital Los Angeles says a freezer malfunction resulted in the loss of blood stem cells from 56 child patients. A hospital statement says the patients and their families were notified in letters sent earlier this month. The hospital says no child's health is in jeopardy due to failure and it apologizes for any distress or confusion. (AP Photo/Richard Vogel, File)
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