function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anlaş, S.', 1],
    ['Anlaş, S. & A. F', 1],
    ['Brullé, Auguste', 1],
    ['Creutzer, Christian', 1],
    ['Fabricius, Johann Christian', 3],
    ['Fuessly, Johann Caspar', 1],
    ['Gusarov, V. I.', 1],
    ['Linnaeus, Carolus', 21],
    ['Müller, O. F.', 4],
    ['Navarrete-Heredia, José Luis & Gómez-Rodríguez, Cecilia', 30],
    ['Paykull, G. de', 6],
    ['SMETANA, ALEŠ & DAVIES, ANTHONY', 2],
    ['Schrank, Franz von Paula', 6],
    ['Scopoli, G. A.', 4],
    ['Smetana, Aleš', 2],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=89)',
    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);