function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Engler, Heinrich Gustav Adolf', 1],
    ['Foreman, Donald Bruce', 1],
    ['Govind, Murugan Govindakurup & Dan, Mathew', 3],
    ['Kottaimuthu, Ramalingam', 1],
    ['Kruakaew, Sudarat & Singha, Suriphon & Sangvichien, Ek', 1],
    ['Markgraf, Friedrich', 3],
    ['Sinclair, John', 15],
    ['Smith, Albert Charles', 11],
    ['Wijnands, Dirk Onno & Heniger, Johannes & Veldkamp, Jan Frederik', 1],
    ['de Laubenfels, David John', 1],
    ['de Wilde, Willem Jan Jacobus Oswald', 43]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=82)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);