Wiendayanthi, N., M. D. Pramudianti, and Y. Hadisuparto. “The Association of Parathyroid Hormone Related Protein and Vitamin D Level With Serum Calcium Ion in Acute Leukemia Patients”. INDONESIAN JOURNAL OF CLINICAL PATHOLOGY AND MEDICAL LABORATORY, vol. 26, no. 3, Sept. 2020, pp. 334-9, doi:10.24293/ijcpml.v26i3.1554.