function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Achterberg, Cornelis van & Long, Khuat Dang & Chen, Xue-xin', 21],
    ['Ahmed, Ishtiaq & Kazmi, Sarfrazul Islam & Rameshkumar, Anandhan', 3],
    ['Ashmead, William Harris', 1],
    ['Braet, Yves & Quicke, Donald', 38],
    ['Madl, M. & Achterberg, C. Van', 1],
    ['Madl, Michael', 1],
    ['Sharkey, Michael J. & Baker, Austin & McCluskey, Kathryn', 1],
    ['Sharkey, Michael J. & Janzen, Daniel H. & Hallwachs, Winnie', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=77)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);