He, X.- biao, Liu, Y.- yang, Huang, G.- min and Du, D. 2020. The Clinical Application of Puncture Frame in Establishing Ultrasound Guided Percutaneous Nephrolithotomy Access. Urology Journal. 17, 4 (Jun. 2020), 358–362. DOI:https://doi.org/10.22037/uj.v17i4.5587.