5Baig LA, Asad F. Introducing problem based learning in a medi- cal school with traditional/con-ventional curriculum. J Coll Phy- sicians Surg Pak 2003; 13(7): 378-81.
6Abraham RR, Vinod P, Kamath MG. Learning approaches of un- dergraduate medical students to physiology in non-PBL- and par- tially PBL-oriented curriculum. Adv Physiol Educ 2008; 32(1): 35-7.
7Finucane P, Nichols F, Gannon B, Runciman S, Prideaux D, Nicholas T. Re-cruiting problem-based learning (PBL) tutors for a PBL-based curriculum: the Flinders University experience. Med Educ 2001; 35(1): 56-61.
8Siminovitch L, McCulloch EA, Till JE. The distribution of colony- forming cells among spleen colonies [ J ]. J Cell Physiol, 1963,62 (3) :327-336.