function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blaschke, F.', 1],
    ['Cuvier, Georges', 1],
    ['Gagnon, Jean-Marc & Kenchington, Ellen & Port, Antony', 1],
    ['Galvez H., O. & Wacquez, M.', 1],
    ['Hryniewicz, Krzysztof & Little, Crispin T. S.', 2],
    ['Mikkelsen, Paula M. & Bieler, Rüdiger', 3],
    ['Negri, Mauro Pietro & Corselli, Cesare', 3],
    ['Oliveira, Cléo Dilnei De Castro & Absalão, Ricardo Silva', 8],
    ['Ortega, José Rafael & Gofas, Serge', 5],
    ['Rosenfeld, Sebastian & Aldea, Cristian & Mansilla, Andres', 1],
    ['Saether, Kristian P. & Jingeng, Sha & Little, Crispin T. S.', 2],
    ['Smith, Edgar A.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);