1. Methylmalonic Acid Quantified in Dried Blood Spots Provides a Precise, Valid, and Stable Measure of Functional Vitamin B-12 Status in Healthy Women. Issue 10 (20th August 2014) Authors: Schroder, Theresa H.; Quay, Teo A. W.; Lamers, Yvonne Journal: Journal of nutrition Issue: Volume 144:Issue 10(2014) Page Start: 1658 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗