The risk factors of severe hypocalcemia in patients with renal secondary hyperparathyroidism after parathyroidectomy 
CHEN Dan, ZHAO Wen-man, WANG Xue-rong, WANG De-guang
Chinese Journal of Blood Purification . 2022, (08): 559 -563 .  DOI: doi:10.3969/j.issn.1671-4091.2022.08.004