function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Su-Fang & Meng, Kai-Kai & Guo, Xi-Bing & Zhao, Wan-Yi', 1],
    ['Info Flora', 1],
    ['Kang, Dae-Hyun & Ong, Homervergel G. & Lee, Jung-Hoon', 1],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 1],
    ['Meng, Kai-Kai & Chen, Su-Fang & Lin, Min & Liao, Wen-Bo', 1],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 2],
    ['Suh, Soo-Jung', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=8)',
    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);