function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Atzner', 1],
    ['Breure, Abraham S. H. & Tardy, Emmanuel', 5],
    ['Esu, Daniela & Girotti, Odoardo', 2],
    ['Gloeer, Peter & Pesic, Vladimir', 5],
    ['Heller, Joseph & Mordan, Peter & Ben-Ami, Frida & Sivan, Naomi', 1],
    ['Marković, Vanja & Gojšina, Vukašin & Novaković, Boris', 3],
    ['Neubauer, Thomas A.', 1463],
    ['Neubauer, Thomas A. & Harzhauser, Mathias', 14],
    ['Neubauer, Thomas A. & Harzhauser, Mathias & Kroh, Andreas', 6],
    ['Neubauer, Thomas A. & Harzhauser, Mathias & Pipik, Radovan', 1],
    ['Neubauer, Thomas A. & Mandic, Oleg & Harzhauser, Mathias', 4],
    ['Neubauer, Thomas A. & Wesselingh, Frank P.', 2],
    ['Pacaud, Jean-Michel', 1],
    ['Sowerby, James DeCarle', 1],
    ['Thivaiou, Danae & Harzhauser, Mathias & Koskeridou, Efterpi', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1512)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);