function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Forster, Paul Irwin', 35],
    ['Liu, Cheng & Ya, Ji-Dong & Tan, Yun-Hong & He, Hua-Jie', 1],
    ['Meve, Ulrich & Gâteblé, Gildas & Liede-Schumann, Sigrid', 6],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 1],
    ['Schlechter, Fridrich Richard Rudolf', 5],
    ['Stevens, W. Douglas & Labat, Jean-Noël & Barthelat, Fabien', 1],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=51)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);