function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anichtchenko, Alexander V. & Shavrin, Alexey V.', 3],
    ['Bagaturov, Mikhail F. & Hillert, Oliver', 4],
    ['Bezděk, Aleš & Hájek, Jiří & Ascr, Biology Centre', 30],
    ['Dupuis, Fabien', 1],
    ['Kral, David & Hillert, Oliver & Drozova, Dana & Sipek, Petr', 1],
    ['Král, David & Hillert, Oliver', 6],
    ['Král, David & Hillert, Oliver & Drožová, Dana & Šípek, Petr', 1],
    ['Nikolajev, Georgiy V. & Ivanova, Elena S.', 2],
    ['Scopoli, Giovanni Antonio', 1],
    ['Shapovalov, Andrey M.', 1],
    ['Shapovalov, Andrey M. & Bagaturov, Mikhail F.', 8],
    ['Ziani, Stefano & Bezděk, Aleš & Branco, Tristão', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=59)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);