The World Health Organisation (WHO) is calling for greater social equality as a way of evening out differences in health, both between different countries and within them. A report, drawn up by the WHO's Commission on the Social Determinants of Health, says that although a country's wealth is an important factor in its people's health, issues of equality also have a significant impact. Sir Michael Marmot, professor of epidemiology and public health who chaired the Commission says that Sri Lanka is among the countries that have better health facilities than some other countries with higher incomes.