function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Athanassiou, Athanassios', 1],
    ['Augugliaro, Claudio & Paniccia, Chiara', 1],
    ['Demeshkant, Vitalii & Rekovets, Leonid', 1],
    ['Don E. Wilson & Russell A. Mittermeier', 7],
    ['Eisenmann, Véra & Kuznetsova, Tatiana', 4],
    ['Eisenmann, Véra & Sergej, Vasiliev', 1],
    ['Fourvel, Jean-Baptiste & Fosse, Philippe & Fernandez, Philippe', 1],
    ['García-Prieto, Luis & Falcón-Ordaz, Jorge', 1],
    ['Hay, OP', 1],
    ['Jackson, Stephen M. & Jansen, Justin J. F. J.', 2],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 10],
    ['Mardini, Mamoun T & Bai, Chen & Wanigatunga, Amal A', 1],
    ['Peter Grubb', 10],
    ['Sam, Youcef', 2],
    ['Wilson, Don E. & Reeder, DeeAnn', 29]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=72)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);