function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Assing, Volker', 71],
    ['Assing, Volker & Brachat, Volker & Meybohm, Heinrich', 15],
    ['Assing, Volker & Meybohm, Heinrich', 34],
    ['Assing, Volker & Schülke, Michael & Brachat, Volker', 1],
    ['Hopp, Katie & Caterino, Michael', 7],
    ['Hopp, Katie J. & Caterino, Michael S.', 2],
    ['Jałoszyński, Paweł & Stevanović, Miroslav', 1],
    ['Jałoszyński, Paweł & Struyve, Tim', 1],
    ['Majka, Christopher & Klimaszewski, Jan', 2],
    ['Müller, P. W. J. & Kunze, Gustav', 1],
    ['Orousset, Jean', 5],
    ['Stevanović, Miroslav', 12],
    ['Čeplík, Dávid', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=164)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);