function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akkari, Nesrine & Mauries, Jean-Paul', 1],
    ['Antic, Dragan & Vagalinski, Boyan & Stoev, Pavel', 18],
    ['Antić, Dragan Ž. & Reip, Hans S. & Dražina, Tvrtko & Rađa, Tonći', 4],
    ['Bueno-Villegas, Julián & Sierwald, Petra', 1],
    ['Enghoff, Henrik', 1],
    ['Golovatch, S. I. & Fiemapong, A. R. Nzoko & Tamesse, J. L.', 30],
    ['Golovatch, Sergei I.', 1],
    ['Golovatch, Sergei I. & Gallo, Jéssica S. & Bichuette, Maria E.', 2],
    ['Golovatch, Sergei I. & Geoffroy, Jean-Jacques', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=81)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);