Kumar, S., P. Bhayani, D. Hathi, and J. Bhagwati. “Hyponatremia Initial Presenting Feature of Normal Pressure Hydrocephalus in Elderly Patient: A Rare Case Report”. JOURNAL OF GERONTOLOGY AND GERIATRICS, Vol. 66, no. 3, Sept. 2018, pp. 156-7, http://www.jgerontology-geriatrics.com/article/view/88.