Jones MS, Tod H (1937)
Effect of altering conditions of autonomie nervous system on choline esterase level in human blood serum
J Ment Sci 83: 202

Tod H, Jones MS (1937)
Studies on Carbohydrate Metabolism in Nervous and Mental Disorders-II. A Comparison of the Hyperglycaemic Index and Choline Esterase Activity in Anxiety and Depressive States
Edinb Med J 44: 46