@misc{indiciae2c0acedc53e8, title = {The portable patient problem pack: a problem-based learning unit.}, author = {H S Barrows and R M Tamblyn}, year = {1977}, doi = {10.1097/00001888-197712000-00007}, url = {https://pubmed.ncbi.nlm.nih.gov/926146/}, note = {Source identifier: 926146} }