Worldwide Epidemic of Obesity (Chapter 1 of  Section 1-Epidemiology)  by Rohana N. Haththotuwa, Chandrika Wijeyaratne and Upul Senarath. In: OBESITY – A Ticking Bomb For Reproductive Health –  Editors: Dr Tahir Mahmood &  Sir SabaratnamArulkumaran. First Edition. Elsevier Insights.