RT Journal Article SR Electronic T1 Non-Hodgkin's lymphoma and nitrate in drinking water: a study in Yorkshire, United Kingdom. JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 383 OP 384 DO 10.1136/jech.53.6.383 VO 53 IS 6 A1 G Law A1 R Parslow A1 P McKinney A1 R Cartwright YR 1999 UL http://jech.bmj.com/content/53/6/383.abstract AB