.onAttach <- function(...){
msg <- paste("# hei successfully loaded\n",
"# usage",
"browseVignettes(package = 'hei')\n",
"# citation",
"Folsom, T., & Nagraj, V.P. (2017). hei: Calculate Healthy Eating Index (HEI) Scores. Journal of Open Source Software, 2(18), 10.21105/joss.00417.",
sep = "\n")
packageStartupMessage(msg)
}
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