function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 8],
    ['Daugeron, Christophe', 12],
    ['Daugeron, Christophe & Grootaert, Patrick', 19],
    ['Esa, C. Daugeron', 10],
    ['Kazerani, Farzaneh & Khaghaninia, Samad & Talebi, Ali Asghar', 10],
    ['Kustov, Semen & Shamshev, Igor', 8],
    ['Linnaeus, Carolus', 6],
    ['Meigen, Johann Wilhelm', 26],
    ['Rafael, J. A. & Câmara, J. T.', 9],
    ['Saigusa, Toyohei', 8],
    ['Schlüsslmayr, Gerhard', 6],
    ['Shamshev, I. V.', 9],
    ['Shamshev, Igor V.', 8],
    ['Shamshev, Igor V. & Ivković, Marija', 17],
    ['Sinclair, Bradley J. & Brooks, Scott E. & Cumming, Jeffrey M.', 27],
    ['Other (17)', 34]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=217)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);