Maurice E Shils
Maurice E Shils
1Division of Industrial Hygiene, School of Public Health, Columbia University, New York City
2Department of Pathology, College of Physicians and Surgeons, Columbia University, New York City
1,2,
Martin Sass
Martin Sass
1Division of Industrial Hygiene, School of Public Health, Columbia University, New York City
2Department of Pathology, College of Physicians and Surgeons, Columbia University, New York City
1,2,
Margaret Wolke
Margaret Wolke
1Division of Industrial Hygiene, School of Public Health, Columbia University, New York City
2Department of Pathology, College of Physicians and Surgeons, Columbia University, New York City
1,2,
Grace Marks
Grace Marks
1Division of Industrial Hygiene, School of Public Health, Columbia University, New York City
2Department of Pathology, College of Physicians and Surgeons, Columbia University, New York City
1,2,
Leonard J Goldwater
Leonard J Goldwater
1Division of Industrial Hygiene, School of Public Health, Columbia University, New York City
2Department of Pathology, College of Physicians and Surgeons, Columbia University, New York City
1,2,
Aaron Berg
Aaron Berg
1Division of Industrial Hygiene, School of Public Health, Columbia University, New York City
2Department of Pathology, College of Physicians and Surgeons, Columbia University, New York City
1,2
1Division of Industrial Hygiene, School of Public Health, Columbia University, New York City
2Department of Pathology, College of Physicians and Surgeons, Columbia University, New York City
* This study was aided by the Division of Research Grants and Fellowships of the U.S. Public Health Service.