Possible causes include deficiency of vitamin D (needed to absorb calcium and phosphorus from the intestine), renaldisorders, liver disease, and certain intestinal disorders.
可能的原因包括：缺乏维生素D（需要吸收钙和磷、肾疾病大肠）、肝脏疾病，和一定的肠道疾病。
2
Objective To investigate the effects of hemodialysis (HD) on the disorders of calcium phosphate metabolism and secondary hyperparathyroidism (SHPT) in patients with chronic renal failure (CRF).
Conclusion After renal transplantation, recipients were easily infected by HPV - B19, which maybe cause multiple system and organ disorders, and affect the result of renal transplantation.