Nickan Research Institute Journal of Parathyroid Disease 2345-6558 8 1 2020 01 01 Signs of hypocalcemia in chronic kidney disease due to secondary hyperparathyroidism; the electrocardiogram pattern e02 e02 EN Mohsen Rajabnia Fatemeh Shoyukhi Bijan Keikhaei Mohammad Bahadoram Journal Article 2019 04 07 2019 07 10