To cite `nlmr` in publications please use:

  Staley J, Burgess S (2017). “Semiparametric methods for estimation of
  a nonlinear exposure-outcome relationship using instrumental
  variables with application to Mendelian randomization.” _Genetic
  epidemiology_, *41*(4), 341-352. doi:10.1002/gepi.22041
  <https://doi.org/10.1002/gepi.22041>.

A BibTeX entry for LaTeX users is

  @Article{nlmr,
    author = {J.R. Staley and S. Burgess},
    title = {Semiparametric methods for estimation of a nonlinear exposure-outcome relationship using instrumental variables with application to Mendelian randomization},
    year = {2017},
    doi = {10.1002/gepi.22041},
    journal = {Genetic epidemiology},
    volume = {41},
    number = {4},
    pages = {341--352},
  }