Is patient travel distance associated with survival on phase II clinical trials in oncology?
Lamont EB, Hayreh D, Pickett KE, Dignam JJ, List MA, Stenson KM, Haraf DJ, Brockstein BE, Sellergren SA, Vokes EE. Is patient travel distance associated with survival on phase II clinical trials in oncology? J Natl Cancer Inst. 2003 Sep 17; 95(18):1370-5.