function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Giacomino, Sebastián & Signorelli, Javier H.', 5],
    ['Gurumayum, S. D.', 1],
    ['Hryniewicz, Krzysztof & Amano, Kazutaka', 3],
    ['Ivanova, Mariya B. & Tsurpalo, Alexandra P.', 5],
    ['Jirapatrasilp, Parin & Cuny, Gilles & Kocsis, László', 2],
    ['Kolpakov, E. V. & Volvenko, I. Е.', 1],
    ['Lam, Katherine & Morton, Brian & Leung, K. F.', 1],
    ['Linnaeus, Carolus', 11],
    ['Mariottini, Paolo & Smriglio, Carlo & Oliverio, Marco', 2],
    ['Pacaud, Jean-Michel', 2],
    ['Petit, Richard E.', 2],
    ['Raines, Bret & Huber, Markus', 2],
    ['Tasso, Vicente & El Haddad, Mustapha & Assadi, Carolina', 2],
    ['Yu, Yanan & Jiao, Yingyi & Zhang, Junlong', 2],
    ['Zelaya, Diego G. & Güller, Marina', 4],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    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);