Sumathipala, A.; Sribaddana, S.H.; Abeysingha, N.M.; de Silva, N*.; Fernando, D.J.; Dayaratne, D.A.; de Silva, D.; Warnasuriya, N.D.; Hotopf, M.
(Australian Academic Press, 2003)
The National Twin Registry of Sri Lanka was established in 1997 as a volunteer register. To extend it to a population-based register, we examined the effectiveness of tracing older twins by inspecting birth records and ...