TY - RPRT TI - Effect of flow rate and freezing on cyanocobalamin recovery using a commercial solid phase extraction cartridge. AU - Lees, L. AU - Bland, A. AU - DiTullio, G. AU - Janech, M. G. AU - Lee, P. A. PY - 2019 DO - 10.1101/538355 UR - https://www.biorxiv.org/content/10.1101/538355v1 ID - 10.1101/538355 ER -