Vol. 21 No. 1 (2015)
				
					Published:
				
				
					2015-03-01
				
			
			 DOI :
            
            https://doi.org/10.24114/jpbp.v21i1.2986
 DOI :
            
            https://doi.org/10.24114/jpbp.v21i1.2986
             DOI :
            
            https://doi.org/10.24114/jpbp.v21i1.2987
 DOI :
            
            https://doi.org/10.24114/jpbp.v21i1.2987
             DOI :
            
            https://doi.org/10.24114/jpbp.v21i1.2989
 DOI :
            
            https://doi.org/10.24114/jpbp.v21i1.2989
             DOI :
            
            https://doi.org/10.24114/jpbp.v21i1.2991
 DOI :
            
            https://doi.org/10.24114/jpbp.v21i1.2991