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Siribaddana, Sisira H., Harriet A. Ball, Suwin N. Hewage, Nick Glozier, Yulia Kovas, DARK Dayaratne, Athula Sumathipala, Peter McGuffin, and Matthew Hotopf. Colombo Twin and Singleton Study (CoTASS): A Description of a Population Based Twin Study of Mental Disorders in Sri Lanka. BioMed Central, 2008.

Siribaddana, Sisira H., et al. Colombo Twin and Singleton Study (CoTASS): A Description of a Population Based Twin Study of Mental Disorders in Sri Lanka. BioMed Central, 2008.