Finally, the additional responsibilities under Option D: (A, B and C plus full screening and follow-up) of ali inhabitants now living on (or scheduled to be repatriated to) Marshall Islands contaminated by atomic fall-out): 1. As in A, B and C - plus the medical care, i.e., screening, follow-up, treatment and primary preventive medicine of this enlarged study group (maximum about 2000 patients). The term "medical care" in each of these options has been purposely left undefined. The spectrum of medical care could range from a very narrow interpre- tation of the research mandate related solely to the detection and treatment of pathologic conditions thought to be related, with a high probability, to radiation exposure, to a widely-expanded concept of "medical care" covering primary prevention, 1°-2° care and comprehensive health care - similar to the defined role of the family practice physician, as defined by the Academy of Family Practice, 14 ET RN OYE rt ane: