Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Exam results according to initial randomisation Results of the three exams, obtained directly after the intervention (diamonds), 18 months later after the conventional clinical pharmacology course (triangles), and 27 months later without previous announcement (circles). Each symbol represents the score from an individual student. Closed symbols: original PBL group, open symbols: original LBL group.
