Contemporary Clinical Trials, Vol. 29, No. 2. (March 2008), pp. 211-219.
Contemporary Clinical Trials, Vol. 26, No. 2. (April 2005), pp. 131-140.
Controlled Clinical Trials, Vol. 20, No. 5. (October 1999), pp. 395-407.
Biometrics, Vol. 50, No. 2. (1994), pp. 337-349.
Statistics in Medicine, Vol. 27, No. 4. (2008), pp. 488-489.
Statistics in Medicine, Vol. 27, No. 4. (2008), pp. 483-487.
Stat Med (15 June 2007)
Biometrics, Vol. 61, No. 1. (March 2005), pp. 217-222.
Biometrics, Vol. 63, No. 2. (June 2007), pp. 429-436.
Biometrics, Vol. 62, No. 3. (September 2006), pp. 777-787.
Biometrics, Vol. 61, No. 2. (June 2005), pp. 343-354.
Biometrics, Vol. 59, No. 3. (2003), pp. 591-600.
Biometrics, Vol. 59, No. 3. (2003), pp. 487-496.
Journal of Biopharmaceutical Statistics, Vol. 16, No. 5. (2006), pp. 623-638.
Journal of Biopharmaceutical Statistics, Vol. 14, No. 4. (2004), pp. 969-983.