Selection of stable reference genes for qPCR-based analysis of circulating cell-free DNA levels in peripheral blood of neuroblastoma patients​Yan Lei Zhen Yang Yuantao Zhou Li Li a Kunming Medical University, Kunming, Yunnan, Chinab Kunming Children’s Hospital, Children’s Hospital Affiliated to Kunming Medical University, Kunming, Yunnan, Chinaon November 4, 2025 at 11:24 am