function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blume, Carl Ludwig von', 3],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 2],
    ['Endlicher, Stephan Friedrich Ladislaus', 1],
    ['Khuraijam, Jibankumar Singh & Wiersema, John H.', 1],
    ['Laubenfels, D. J. de', 2],
    ['Martin, Jon H. & Lau, Clive S. K.', 1],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 1],
    ['Oliver, P. Graham & Holmes, Anna', 1],
    ['Oliver, P. Graham & Holmes, Anna & Killeen, Ian & Light, Janice', 1],
    ['Pilger, Robert Knud Friedrich', 4],
    ['Pujana, Roberto R. & Wilf, Peter & Gandolfo, Maria A.', 4],
    ['Sender, Luis Miguel & Villanueva-Amadoz, Uxue', 1],
    ['Suh, Soo-Jung', 1],
    ['Wasscher, Jacob', 2],
    ['de Laubenfels, David John', 10],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);