function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bleeker, Pieter', 2],
    ['Chang, H. - W.', 1],
    ['Chaudhuri, B. L.', 1],
    ['Fowler, Henry Weed', 2],
    ['Heok Hee Ng', 2],
    ['Klausewitz, Wolfgang', 1],
    ['Mai, D. Y.', 1],
    ['Maurice Kottelat', 5],
    ['Ng, Heok Hee', 1],
    ['Roberts, Tyson R.', 1],
    ['Sauvage, H. E.', 2],
    ['Smith, H. M.', 2],
    ['Taki, Y. & Doi, Atsushi', 1],
    ['Tchang, T. - L.', 1],
    ['Wu, H. - W.', 4],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    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);