If using MR-Base, the IEU OpenGWAS database, or the TwoSampleMR R package please cite:

Hemani G, Zheng J, Elsworth B, Wade KH, Baird D, Haberland V, Laurin C, Burgess S, Bowden J, Langdon R, Tan VY, Yarmolinsky J, Shihab HA, Timpson NJ, Evans DM, Relton C, Martin RM, Davey Smith G, Gaunt TR, Haycock PC, The MR-Base Collaboration. The MR-Base platform supports systematic causal inference across the human phenome. eLife 2018;7:e34408.<doi:10.7554/eLife.34408>

If also using the MR-Steiger test please cite:

Hemani G, Tilling K, Davey Smith G (2017) Orienting the causal relationship between imprecisely measured traits using GWAS summary data. PLOS Genetics 13(11): e1007081. https://doi.org/10.1371/journal.pgen.1007081

Corresponding BibTeX entries:

  @Article{twosamplemr,
    author = {G. Hemani and J. Zheng and B. Elsworth and K. Wade and D.
      Baird and V. Haberland and C. Laurin and S. Burgess and J. Bowden
      and R. Langdon and V.Y. Tan and J. Yarmolinsky and H.A. Shibab
      and N.J. Timpson and D.M. Evans and C. Relton and R.M. Martin and
      G. {Davey Smith} and T.R. Gaunt and P.C. Haycock and {The MR-Base
      Collaboration}},
    title = {The MR-Base platform supports systematic causal inference
      across the human phenome},
    year = {2018},
    volume = {7},
    journal = {eLife},
    pages = {e34408},
    url = {https://elifesciences.org/articles/34408},
    doi = {10.7554/eLife.34408},
  }

  @Article{mrsteiger,
    author = {G. Hemani and K. Tilling and G. {Davey Smith}},
    title = {Orienting the causal relationship between imprecisely
      measured traits using GWAS summary data},
    journal = {PLoS Genetics},
    year = {2017},
    volume = {13},
    number = {11},
    pages = {e1007081},
    doi = {10.1371/journal.pgen.1007081},
    url = {https://doi.org/10.1371/journal.pgen.1007081},
  }