CRP and major depressive disorder: Using only this SNP as an instrument, UVMR indicates a negative association of CRP with a GP diagnosis of depression (\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$-0.155 \;(0.07)$$\end{document}-0.155(0.07)).