function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bariche, Michel & Fricke, Ronald', 3],
    ['Bleeker, Pieter', 19],
    ['Bocourt, F.', 2],
    ['Boulenger, George Albert', 2],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 4],
    ['Carvalho-Filho, Alfredo & Baldwin, Carole C.', 2],
    ['González-Lorenzo, J. Gustavo & González-Jiménez, José F.', 4],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 3],
    ['Lowe, R. T.', 3],
    ['Macleay, William John', 4],
    ['Nurettin Meriç & Lütfiye Eryilmaz & Müfit Özulug', 3],
    ['Peters, Wilhelm Carl Hartwig', 7],
    ['Richardson, John', 6],
    ['Sithole, Yonela & Heemstra, Elaine & Mwale, Monica', 4],
    ['Steindachner, F.', 5],
    ['Other (28)', 34]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=105)',
    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);