Sharma, M.; Thakur, S.; Singh, K.; Shekhar, S. Comparative Maternal Outcomes of Oral Nifedipine and Intravenous Labetalol for Severe Hypertension During Pregnancy: An Open Label Randomized Controlled Trial. Int J Reprod Contracept Obstet Gynecol 2020, 9, 2847-2851.