TY - RPRT TI - Effectiveness of problems used in problem-based learning. AU - D J Mpofu AU - M Das AU - J C Murdoch AU - J H Lanphear PY - 1997 DO - 10.1046/j.1365-2923.1997.00672.x UR - https://pubmed.ncbi.nlm.nih.gov/9488852/ ID - 9488852 ER -