The union representing 3,700 registered nurses at Stanford Health Care and Lucile Packard Children’s Hospital has voted to authorize a strike, union leaders said Thursday. The union, the Committee for Recognition of Nursing Achievement (CRONA) on Wednesday voted 85% in favor of moving forward with a potential strike, which would affect more than a dozen outpatient centers across the Bay Area in addition to Stanford Hospital (part of Stanford Health Care) and Lucile Packard hospital.