C. . N. Maracilu, C. M. Yeni, H. Hasanuddin, H. . Nora, and S. . . I. Nainggolan, “The effect of serum magnesium, calcium, and potassium levels on the event of calf muscle cramps, according to the perspective of pregnant women in the third-trimester of pregnancy : Pengaruh Kadar Magnesium, Kalsium, dan Kalium Serum Terhadap Terjadinya Kram Otot Betis, Menurut Perspektif Ibu Hamil di Trimester Ketiga Kehamilan”, Indones J Obstet Gynecol, vol. 10, no. 4, pp. 194–199, Oct. 2022.