High risk pregnancy :  management options /  senior editor, David James ; editors, Philip J. Steer, Carl P. Weiner, Bernard Gonik ; associate editors, Caroline A. Crowther, Stephen C. Robson.   - 4th ed.   - St. Louis, Mo. :  Elsevier Saunders,  c2011.   - 1475 p. :  ill. (chiefly col.) ;  29 cm.