1. Hytten, F.E. et al. (1966). Body water. J. Obstet. Gynecol. Br. Common., 73, 533
2. Hytten, F.W. and Leiten, I. (1971). Other functional changes. The Physiology of Human Pregnancy. (Oxford: Blackwell)
3. Langgard, H. (1967). Dan. Med. Bull, 14, 533
4. Lauritsen, O.S. (1969). Fibrinolysis. Scand. J. Clin. Lab. Invest., 23, 191
5. Lindheimer, M.D., Katz, A.I. (1977). Kidney function and Disease in Pregnancy. (Lea & Febiger)