function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baturina, N. S.', 3],
    ['Baturina, N. S. & Efstifeeva, S. S.', 4],
    ['Ito, Tomiko', 9],
    ['Ivanov, Vladimir D. & Melnitsky, Stanislav I.', 5],
    ['Kiss, Ottó', 13],
    ['Lakhwinder, K. & Malkiat, S. Saini', 10],
    ['Malicky, H.', 23],
    ['Malicky, Hans', 28],
    ['Mey, Wolfram & Malicky, Hans', 20],
    ['Nozaki, Takao & Park, Sun-Jin', 4],
    ['Sipahiler, Füsun', 4],
    ['Sun, Chang-Hai', 25],
    ['Sun, Changhai', 11],
    ['Torii, Takaaki & Kobayashi, Tohru', 4],
    ['Valladolid, María & Arauzo, Mercedes & Chertoprud, Mikhail V.', 5],
    ['Other (26)', 41]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=209)',
    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);