function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baur, Hannes', 1],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 22],
    ['Gadallah, Neveen S. & Yefremova, Zoya A.', 3],
    ['Gebiola, Marco & Bernardo, Umberto & Ribes, Antoni', 1],
    ['Kosheleva, O. V.', 1],
    ['Li, Tao & Yang, Zhong-Qi & Sun, Shu-Ping & Wang, Rong', 2],
    ['Mifsud, David & Askew, Richard R.', 1],
    ['Plecas, Milan & Zikic, Vladimir & Kocic, Korana', 1],
    ['Yefremova, Zoya A.', 7],
    ['Yegorenkova, Ekaterina & Yefremova, Zoya', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);