function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Delfosse, Emmanuel & Iorio, Étienne', 1],
    ['Fabricius, Johann Christian', 1],
    ['Kurt, Kemal & Erdek, Melek & Kurt, Pinar', 2],
    ['Linnaeus, Carolus', 6],
    ['Modebadze, Naia & Martens, Jochen & Snegovaya, Nataly', 3],
    ['Snegovaya, N. Y.', 1],
    ['Snegovaya, Nataly Yu. & Cokendolpher, James C. & Zamani, Alireza', 4],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Trilikauskas, Laimonas A. & Azarkina, Galina N.', 1],
    ['Wijnands, Dirk Onno & Heniger, Johannes & Veldkamp, Jan Frederik', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);