-2Marshall Islands, plus a matched control population consisting primarily of unexposed Rongelap people, a limited surveillance has In addition, been provided to those persons who were relocated from Bikini. The approximate numbers of Marshallese are; ~ 90 ~ 160 -~ 209 ~ 140 Rongelap Utirik Matched controls Bikinians ~~ ~ 590 TOTAL Depending upon circumstance s, usually three of four trips are made each year to these locations, Laboratory Brookhaven National (BNL) Medical De partment physicians coordinate and direct these programs. One of these trips consists of a large medical staff (usua lly 12), the-majority of whom are specialists from variou s leading U.S, medical centers and institutions, tions are given, At this time the annual physical examina- including hematological, urological, serological and other examinations as appropriate, During these visits, "sick call'' is held for all residents wishing medical attention; this usually results in up to several hundred persons on each atoll seeing the physicians. Included in "sick calls'' are physical examinations, blood tests, treatment if possible, and-referral to the Trust Territory Health Services, Other visits during the year are far more specialized examinations (e,g., pediatrics, thyroid, dental, intestinal parasites, etc.) and include BNL staff and appropriate specialists. 7 S011G24 we’