TY - GEN AU - Campbell,Michael J. AU - Walters,Stephen John AU - Machin,David TI - Medical statistics: a textbook for the health sciences SN - 9780470025192 AV - U1 - PY - 2007/// CY - England, PB - Wiley KW - Medical statistics KW - Medicine KW - Biometry KW - Research Design KW - Statistics as Topic N1 - Includes index ER -