This slim volume marks a very significant milestone for Sri Lanka — first,for the development of the country’shuman research and, second, for the impetus and legitimacy it will provide for developing countries like Sri Lanka to formulate their own research ethics. The book announces to the world that the Sri Lankan Twin Registry (SLTR)This slim volume marks a very significant milestone for Sri Lanka — first, for the development of the country’s human research and, second, for the impetus and legitimacy it will provide for developing countries like Sri Lanka to formulate their own research ethics. The book announces to the world that the Sri Lankan Twin Registry (SLTR) aims to establish a centre of excellence for twin, family and genetic studies. The authors see twin research as uniting diverse disciplines and research methods. The aim is to develop a population-based register as well as a voluntary register if twins.