Pawitan, J.A. and Sukmawati, D. 2009. Association between presence in lectures and student knowledge gain in problem based learning: experience in Neuropsychiatry module, FMUI, International Program. Medical Journal of Indonesia. 18, 2 (May 2009), 131–4. DOI:https://doi.org/10.13181/mji.v18i2.353.