307 
collaborators, the chief of services in the local Public Health Departments in 
both countries, who went far out of their ways to give personal service and 
advice from their own experiences in the islands to our expedition. They have 
made the local documents and records available to us, and continue to 
participate in the scientific program and have thus been listed as local 
collaborating investigators. The various studies have been divided into three 
major categories: 
1) Disease Patterns in Primitive Isolated Populations; 
2) Population Genetic Studies in Relation to Congenital Defects 
and Heredofamilial Diseases in the Isolated Island Populations; 
3) Epidemiological Investigation of the Demography, Kinship, 
Migration and Marriage Patterns of the Populations Studied; 
Documentation of the Ethnography, Natural History, Ecology, 
and Medical Procedures and Findings. 
These are summarized below, with a list of the investigators who are 
contributing in each study. These summaries are not contemplated papers, but 
rather, fields of investigation in which one or numerous more specific 
publications are planned. 
