function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anelli, Luiz E. & Simões, Marcello G. & González, Carlos Roberto', 3],
    ['Fuersich, Franz T. & Alberti, Matthias & Pandey, Dhirendra K.', 5],
    ['Healy, John M. & Mikkelsen, Paula M. & Bieler, Rüdiger', 2],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 3],
    ['Ivanova, Mariya B. & Tsurpalo, Alexandra P.', 4],
    ['Lam, Katherine & Morton, Brian & Leung, K. F.', 1],
    ['Mariottini, Paolo & Smriglio, Carlo & Oliverio, Marco', 4],
    ['Oliver, P. Graham & Holmes, Anna', 4],
    ['Oliver, P. Graham & Holmes, Anna & Killeen, Ian & Light, Janice', 3],
    ['Pacaud, Jean-Michel', 2],
    ['Perna, Rafael La & Brunetti, Mauro M. & Bella, Giano Della', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    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);