function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blaschke, F.', 1],
    ['Born, Ignaz von', 1],
    ['Geiger, Daniel L.', 1],
    ['Lightfoot, John', 2],
    ['Linnaeus, Carolus', 34],
    ['Locard, A.', 2],
    ['Low, Martyn E. Y. & Tan, Siong Kiat', 1],
    ['Mariottini, Paolo & Smriglio, Carlo & Oliverio, Marco', 4],
    ['Martín-González, Esther & Vera-Peláez, José Luis', 4],
    ['Moore, Charles', 1],
    ['Muratov, Igor V. & Heyns-Veale, Elodie', 1],
    ['Müller, Otto Friedrich', 2],
    ['Pacaud, Jean-Michel', 3],
    ['Röding, Peter Friedrich', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=58)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);