function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brambach, Fabian & Byng, James W. & Culmsee, Heike', 5],
    ['Byng, James W. & Phillipson, Peter B. & Snow, Neil', 3],
    ['Craven, Lyndley Alan & Biffin, Ed & Ashton, Ruth Elizabeth', 2],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 4],
    ['Diels, Friedrich Ludwig Emil', 33],
    ['Hartley, Thomas Gordon & Perry, Lily May', 18],
    ['Jarvis, Charlie', 7],
    ['Lauterbach, Carl (Karl) Adolf Georg', 4],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 3],
    ['Snow, Neil & Byng, James W. & Munzinger, Jérôme', 9],
    ['Snow, Neil & Craven, Lyndley Alan', 5],
    ['Soh, Wuu Kuang & Sam, Hoang Van & Parnell, John A. N.', 3],
    ['Soh, Wuu-Kuang & Parnell, John', 58],
    ['Takeuchi, Wayne N.', 4],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 3],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=177)',
    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);