Toward a Comprehensive Approach to the Collection and Analysis of Pica Substances, with Emphasis on Geophagic Materials

• Sera L. Young ,

  * E-mail: sera@younglucks.com

  Affiliations School of Public Health, University of California, Berkeley, California, United States of America, Department of Pediatrics, University of California Davis, Davis, California, United States of America

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• M. Jeffrey Wilson,

  Affiliation Soils Group, Macaulay Institute, Craigiebuckler, Aberdeen, Scotland, United Kingdom

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• Dennis Miller,

  Affiliation Department of Food Sciences, Cornell University, Ithaca, New York, United States of America

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• Stephen Hillier

  Affiliation Soils Group, Macaulay Institute, Craigiebuckler, Aberdeen, Scotland, United Kingdom

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