... 10. Spilker B. Methods of assessing and improving compliance in clinical trials. In: Cramer JA, Spilker B, eds. ... J Clin Epidemiol 1997;50:385-391 CrossRef | Web of Science | Medline. 26. Kastrissios H , Suarez JR , Hammer S , Katzenstein D , Blaschke TF . ...