function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brandt, Ioanne Friderico', 5],
    ['Enghoff, Henrik', 24],
    ['Enghoff, Henrik & Ngute, Alain S. K. & Kwezaura, Revocatus L.', 12],
    ['Golovatch, Sergei I. & Wesener, Thomas', 9],
    ['Hoffman, Richard L.', 6],
    ['Hollier, John & Stöckli, Eduard & Wesener, Thomas', 10],
    ['Iniesta, Luiz Felipe Moretti & Bouzan, Rodrigo Salvador', 22],
    ['John Hollier & Edmund Schiller & Nesrine Akkari', 13],
    ['Mwabvu, Tarombera & Hamer, Michelle & Slotow, Rob', 20],
    ['Mwabvu, Tarombera & Hamer, Michelle & Slotow, Robert', 15],
    ['Mwabvu, Tarombera & Hamer, Michelle L. & Slotow, Robert H.', 11],
    ['Shelley, Rowland M. & Golovatch, Sergei I.', 7],
    ['Sierwald, P. & Mauriès, P.', 6],
    ['VandenSpiegel, Didier & Shelley, Rowland M.', 6],
    ['Vohland, Katrin & Hamer, Michelle', 14],
    ['Other (17)', 41]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=221)',
    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);