Nitrates in drinking water and methemoglobin levels in pregnancy: a longitudinal study Manassaram, Deana M. ; Backer, Lorraine C. ; Messing, Rita ; Fleming, Lora E. ; Luke, Barbara ; Monteilh, Carolyn P. Abstract Publication: Environmental Health Pub Date: December 2010 DOI: 10.1186/1476-069X-9-60 Bibcode: 2010EnvHe...9...60M