Lai, D., Xu, W., Chen, M., He, Y., Li, X., Sheng, M., & Zeng, X. (2020). Minimally Invasive Percutaneous Nephrolithotomy with a Novel Vacuum-assisted Access Sheath for obstructive calculous pyonephrosis :A Randomized Study. Urology Journal, 17(05), 474-479. https://doi.org/10.22037/uj.v16i7.5577