1. Effect of drugs on vitamin B12 levels obtained using the Lactobacillus leichmanii method. Issue 6 (November 1969) Authors: Powell, D. E. B.; Thomas, J. H.; Mandal, A. R.; Dignam, C. T. Journal: Journal of clinical pathology Issue: Volume 22:Issue 6(1969) Page Start: 672 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗