function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alicky', 22],
    ['Baturina, N. S.', 12],
    ['Baturina, N. S. & Efstifeeva, S. S.', 8],
    ['Embacher, G. & Malicky, H. & A. E & R. A', 20],
    ['Givens, Donald R.', 6],
    ['GÓRECKI, Krzysztof', 5],
    ['Ibrahimi, Halil & Gashi, Agim & Bilalli, Astrit & Musliu, Milaim', 6],
    ['Ibrahimi, Halil & Kučinić, Mladen & Vitecek, Simon', 7],
    ['Konovalova, Daria A. & Kislitsina, Nadezhda I.', 6],
    ['Malicky, H.', 7],
    ['Malicky, Hans', 12],
    ['Mey, Wolfram & Malicky, Hans', 5],
    ['Nozaki, Takao', 9],
    ['Sipahiler, Füsun', 8],
    ['Vitecek, Simon & Kucinic, Mladen & Olah, Janos & Previsic, Ana', 10],
    ['Other (30)', 50]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=193)',
    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);