RT Journal Article SR Electronic T1 Nutritional Deficiencies in Modern Society JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 78 OP 79 DO 10.1136/oem.31.1.78-a VO 31 IS 1 A1 Marr, J. W. YR 1974 UL http://oem.bmj.com/content/31/1/78.2.abstract AB