function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 3],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Bean, T. H.', 1],
    ['Bleeker, Pieter', 2],
    ['Cuvier, Georges & Valenciennes, A.', 3],
    ['Du, Jianguo & Loh, Kar-Hoe & Hu, Wenjia & Zheng, Xinqing', 3],
    ['Golani, Daniel', 2],
    ['Golani, Daniel & Bogorodsky, Sergey V.', 5],
    ['Klunzinger, C. B.', 3],
    ['Koeda, Keita & Yoshino, Tetsuo & Imai, Hideyuki', 5],
    ['Kossmann, R. & Räuber, H.', 2],
    ['Mooi, R. D. & Jubb, R. N.', 3],
    ['Randall, John E. & Victor, Benjamin C. & Alpermann, Tilman J.', 7],
    ['Randall, John Ernest Dr. & Bogorodsky, Sergey V.', 6],
    ['Randall, John Ernest Dr. & Victor, Benjamin C.', 4],
    ['Other (21)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=71)',
    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);