function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aistleitner, E.', 56],
    ['Ferris, Clifford D.', 9],
    ['Kerschbaum, Walter & Standfest, Johann', 2],
    ['Koçak, Ahmet Ömer & Kemal, Muhabbet', 2],
    ['Kuzmin, A. A. & Beljaev, E. A.', 5],
    ['Makhov, I. A. & Beljaev, E. A.', 9],
    ['Mironov, Vladimir', 7],
    ['Mironov, Vladimir & Galsworthy, Anthony', 57],
    ['Mironov, Vladimir & Ratzel, Ulrich', 5],
    ['Mironov, Vladimir & Šumpich, Jan', 20],
    ['Rybalkin, S. A. & Beljaev, E. A.', 4],
    ['Schmidt, Olga', 34],
    ['W, M.', 2],
    ['Weidlich, Michael', 4],
    ['Šumpich, Jan & Mironov, Vladimir', 6],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=238)',
    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);