Nomin Gan-Erdene, 4, sits with her father, Gan-Erdene Ganbat (left) and volunteer Shannel Vidallon at UCSF Benioff Children's Hospital Oakland, as they wait for an appointment Dec. 15. Children's Hospital Oakland is one of a few facilities in the world participating in a clinical trial for neurodegeneration with brain iron accumulation. Photo: Liz Hafalia / The Chronicle / ONLINE_YES
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