function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Clarke, J. F. Gates', 1],
    ['Donald L. J. Quicke & Sergey A. Belokobylskij & M. Alex Smith', 5],
    ['Dugdale, John S. & Meyrick, Edward', 1],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 32],
    ['Harbach, Ralph E. & Kitching, Ian J. & Culverwell, C. Lorna', 2],
    ['Haworth, Adrian Hardy', 1],
    ['Heppner, John B. & Landry, Bernard', 1],
    ['Huemer, Peter & Van Nieukerken, Erik J.', 1],
    ['Landry, Jean-François & Nazari, Vazrick & Dewaard, Jeremy R.', 1],
    ['Liu, Tengteng & Wang, Shuxia & Li, Houhun', 1],
    ['Matsunaga, Janis N. & Howarth, Francis G.', 1],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Rota, Jadranka', 2],
    ['Rota, Jadranka & Aguiar, Antonio M. F. & Karsholt, Ole', 8],
    ['Rota, Jadranka & Miller, Scott E.', 3],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=65)',
    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);