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JAMA|April 7, 1993
Declining blood lead levels and cognitive changes in moderately lead-poisoned childrenH A Ruff, P E Bijur, M Markowitz, et al.
Environmental Health Perspectives|September 1, 1996
Moderate lead poisoning: trends in blood lead levels in unchelated childrenM E Markowitz, P E Bijur, H A Ruff, et al.
Developmental Medicine and Child Neurology|October 1, 1985
Developmental abnormalities in infants and children with acquired immune deficiency syndrome (AIDS) and AIDS-related complexM H Ultmann, A L Belman, H A Ruff, et al.
The International Journal of Neuroscience|February 1, 1987
Developmental abnormalities in children with acquired immunodeficiency syndrome (AIDS): a follow-up studyM H Ultmann, G W Diamond, H A Ruff, et al.
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