function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ebejer, Martin J. & Gatt, Paul', 1],
    ['Fabricius, Johann Christian', 1],
    ['Falaschi, Rafaela Lopes & Oliveira, Sarah Siqueira', 3],
    ['Grimaldi, David A. & Triplehorn, Don M.', 1],
    ['Haenni, Jean-Paul', 3],
    ['Michelsen, Verner & O’Hara, James E.', 1],
    ['NEL, ANDRÉ & KUNDURA, JEAN-PAUL', 1],
    ['Schlüsslmayr, Gerhard', 1],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 4],
    ['Skartveit, John', 14],
    ['Skartveit, John & Krizmanić, Katarina', 9],
    ['Skartveit, John & Nel, André', 11],
    ['Skartveit, John & Wedmann, Sonja', 17],
    ['Wiedemann, Christian Rudolph Wilhelm', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=68)',
    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);