TY - BOOK AU - Matthews,J.N.S. TI - Introduction to randomized controlled clinical trials SN - 9781584886242 AV - R853.C55 M376 2006 PY - 2006/// CY - Boca Raton, Fla. PB - CRC Press KW - Clinical trials KW - Statistical methods N1 - Includes bibliographical references (p. 269-272) and index; Also available as an electronic resource; CRC Press (http://www.crcpress.com) ER -