function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bleeker, Pieter', 1],
    ['Duncker, G.', 2],
    ['Fowler, Henry Weed', 2],
    ['Günther, Albert Charles Lewis Gotthilf', 1],
    ['Jordan, David Starr & Seale, A.', 1],
    ['Kaup, Johann Jakob', 3],
    ['Kottelat, Maurice', 1],
    ['Menon, A. G. K. & Yazdani, G. M.', 1],
    ['Ng, Casey Keat Chuan & Lim, Teow Yeong & Ahmad, Amirrudin', 2],
    ['Ogilby, J. D.', 1],
    ['Prashad, B. & Mukerji, D. D.', 1],
    ['Reichenow, A.', 1],
    ['Sulaiman, Zohrah & Hui, Tan Heok & Lim, Kelvin Kok Peng', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);