Journal Article
                        
                        Gunawardena, GSA,   Siriwardana, SR  Paranavitane, MM  Ismail, and SD  Fernando.  
"Anthelmintic prescribing patterns of a sample of general practitioners from selected areas in the Colombo district of Sri Lanka." Indian journal of community medicine: official publication of Indian Association of Preventive & Social Medicine 33, no. 2 (2008): 93.