function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['Hegde, V. D.', 3],
    ['Masumoto, Kimio', 39],
    ['Schawaller, Wolfgang', 43],
    ['Schawaller, Wolfgang & Aston, Paul', 3],
    ['Schawaller, Wolfgang & Bellersheim, Aron', 19],
    ['Song, Xiao-Bin & Zhou, De-Yao & Chen, Zhi-Bing & Lin, Ming-Zhen', 2],
    ['Wei, Zhonghua & Ren, Guodong', 18],
    ['Xiao-Lin, Zhao & Guo-Dong, Ren', 7],
    ['Zhao, Xiao-Lin & Ren, Guo-Dong', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=137)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);