function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Griffiths, O. L. & Herbert, D. G.', 1],
    ['Harzhauser, Mathias & Neubauer, Thomas A. & Kadolsky, Dietrich', 1],
    ['Inkhavilay, Khamla & Sutcharit, Chirasak & Bantaowong, Ueangfa', 1],
    ['Muratov, Igor V.', 10],
    ['Neubert, Eike', 11],
    ['Neubert, Eike & Damme, Dirk van', 2],
    ['Rowson, B & Warren, B. H. & Ngereza, C. F.', 2],
    ['Résumé, Jacques Daget', 1],
    ['Sutcharit, Chirasak & Naggs, Fred & Panha, Somsak', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);