function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amon, Diva J & Ziegler, Amanda F & Drazen, Jeffrey C', 4],
    ['Collins, Martin A.', 2],
    ['Gerdes, Klaas & Kihara, Terue Cristina & Martinez Arbizu, Pedro', 3],
    ['Gleadall, Ian G. & Guerrero-Kommritz, Jürgen', 2],
    ['Guerrero-Kommritz, Jürgen & Camelo-Guarin, Stefany', 2],
    ['Huffard, Christine L.', 4],
    ['Kakiopoulos, G. & Demetriou, J.', 2],
    ['Kaneko, Natsumi & Kubodera, Tsunemi', 2],
    ['Linnaeus, Carolus', 3],
    ['O\'Shea, Steve', 16],
    ['Roper, Clyde F. E. & Gutierrez, A. & Vecchione, M.', 6],
    ['Sreeja, Vijayamma & Norman, Mark D. & Kumar, Appukuttannair Biju', 2],
    ['Strugnell, Jan & Voight, Janet R. & Collins, Patrick C.', 11],
    ['Taki, Iwao', 5],
    ['Zheng, Xiaodong & Lin, Xiangzhi & Lu, Chungcheng & Ma, Ruijuan', 2],
    ['Other (20)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=87)',
    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);