Queenan, John T 
Queenan's management of high-risk pregnancy :  an evidence-based approach /   Management of high-risk pregnancy  edited by John T. Queenan, Catherine Y. Spong, Charles J. Lockwood.   - 6th ed.   - Oxford :  Wiley-Blackwell,  2012.   - xvi, 488 p. :  ill. ;  29 cm.