function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 2],
    ['Conrad, Timothy Abbot', 6],
    ['Conrad, Timothy Abbott', 3],
    ['Crespo, Enrique', 2],
    ['Dall, William Healey', 3],
    ['DeVries, Thomas J.', 2],
    ['Kleemann, Karl', 11],
    ['Linnaeus, Carolus', 18],
    ['Pelorce, Jacques & Poutiers, Jean-Maurice', 7],
    ['Röding, Peter Friedrich', 5],
    ['Saether, Kristian P. & Jingeng, Sha & Little, Crispin T. S.', 3],
    ['Saether, Kristian P. & Little, Crispin T. S.', 5],
    ['Smith, Edgar A.', 6],
    ['Sowerby, James DeCarle', 5],
    ['von Cosel, Rudo & Janssen, Ronald', 3],
    ['Other (13)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=95)',
    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);