function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 2],
    ['Arana, Marcelo D.', 3],
    ['Boudrie, Michel & Cremers, Georges & Øllgaard, Benjamin', 6],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 2],
    ['Wan, Xia & Knapp, Ralf & Chen, De-Kui & He, Hai & Zhang, Li-Bing', 1],
    ['Øllgaard, Benjamin', 2],
    ['Øllgaard, Benjamin & Testo, Weston', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);