function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Borges, Michela & Amaral, Antonia C. Z.', 1],
    ['Fatemi, Yaser & Stöhr, Sabine', 1],
    ['Glück, Franziska U. & Stöhr, Sabine & Bochert, Ralf', 2],
    ['Granja-Fernández, Rebeca & Hendrickx, Michel E.', 1],
    ['Lamarck, J. B. P. A. de M. de', 1],
    ['Madeira, Patrícia & Kroh, Andreas & Cordeiro, Ricardo', 8],
    ['Mcknight, Donald G.', 4],
    ['O’Hara, Timothy D. & Thuy, Ben', 2],
    ['Rodrigues, Clara F. & Paterson, Gordon L. J.', 1],
    ['Stöhr, Sabine & O’Hara, Timothy D.', 2],
    ['Thuy, Ben & Stöh, Sabine', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);