function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blume, Carl Ludwig von', 1],
    ['De Wilde, Willem J. J. O. & Duyfjes, Brigitta E. E.', 23],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Harms, Hermann August Theodor', 2],
    ['Jarvis, Charlie', 6],
    ['Liu, Qun & Lin, Nan & Zhang, Dai-Gui & Huang, Xian-Han', 1],
    ['McQuate, Grant T. & Liquido, Nicanor J.', 1],
    ['Merrill, Elmer Drew & Perry, Lily May', 2],
    ['Pulle, August Adriaan', 1],
    ['Rugayah, Rugayah & de Wilde, Willem Jan Jacobus Oswald', 5],
    ['Umoh, Omodot Timothy & Bassey, Margaret Emmanuel', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);