CONTENTS 19GO SURVEYoocccccccscccccceseceececeeenesecensccesscssesseceneceseaseesceauescaeeeeesuessietescuseecssssecessaseeees 14 Background Material...............:ccccccceseseeeee see eeeeseee tees ieeestteseneeneansieeieeneneeneeesies 14 Procedure..........:cccccccecceeeceeesctececsseseeea seve cucceceueesecececetateseeeeeeeeeesetcseseeseccsuenenseieeess 14 RESULTS AND DISCUSSION........0c..0cccccccverseseseeeeteesceseceeeceeteetstuetertiseeasaeseseeuseeesssaueauaaes 15 Interval Medical History........0.000.0.0:c cece ce ce ene eee eee tetera t eet ea tacts cee ereee es 15 Review of Data on Mortality and Pregnancy Terminations Over the Past Six Years .............:0:::cc es 17 Physical Examinations........0.00.000000:00 cece cet ce nents te tence een eeeeceeeneiensenteees 18 Pediatric Examinations....0..0..0..00.0: ccc cece eee tee ce crete cette es tbe ee cneeneretpesertitas 18 Growth and DevelopmentStudies........0.000.00 eee ccc ceeeeeeeecne ener enee 20 Adult Abnormalities....0.00.0000ccccccccccceeseeceececne ccs cseeneeetecaeneenscneeuesieeeeniecaeeienseees 23 Cardiovascular Survey ......0..0...00. ccc cence cece entee stot ae cunts sents seseenstssentiteesnrtens 23 Ophthalmological Examinations....0.000000.00.00 00000 ccc cee cette 25 - Arthritis Survey... ccc eee cect cent tee teee crete crerteeetnnees Dental Survey...0..0000.000 ccc eet tte te beeeeeees 25 bli 26 Studies of Aging Criteria.....0.00.00 eee be tee 28 Residual Beta Burns.........0.0000 0c ccescececesee tee settee fe centeueeeteteeeenetneneseteenes 33 Laboratory Examinations.....0.00.0.0000000cccccccccccceecesccee cnet tect teetnetceteetcctetutecete vanes 33 Hematological... ccc ccc eee cee eee ses crete tet eetetueutateieecetisistiettiens a 33 Hematological Leukemia Survey.....0..0.0.00000ccccc cece ceeee cece ee ettesneenentteneneenes 37 ComplementFixation Tests.......0.0.00.00.00cceccccccteceses eee ueeeeeesecaeeeeesasiteeesceensces 38 Sodium and Potassium Levels, 1959.00.00... eccececccccceeecetecensevseneenes 38 Thyroid Metabolism... cece ce cece ceeceneeeenseeeseestieteesaeseninetienetectees 39 GUCOSUTIALecce eee ce cee eneecereceeseacaeceeeesetseneceuecateeeesaceeeeesetssentsecesessititeiees 39 Serum Vitamin Byo......ccecccececsescseesceeesesceeeseseeeteessesseaseecseeeseteeecnecsesetesies 39 Studies of Genetically Inherited Traits....0..0000000 cece cceeteecetteteceteeeseeenes 41 iv