function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Day, F.', 1],
    ['Fowler, Henry Weed', 1],
    ['He, M. J. & Chen, Y. - R.', 1],
    ['Heok Hee Ng', 18],
    ['Heok Hee Ng & Darrell J. Siebert', 6],
    ['Hora, S. L.', 1],
    ['Ng, H. H. Tan H. H.', 2],
    ['Ng, Heok Hee', 5],
    ['Ng, Heok Hee & Freyhof, J.', 1],
    ['Ng, Heok Hee & Kottelat, Maurice', 5],
    ['Ng, Heok Hee & Rainboth, W. J.', 1],
    ['Ng, Heok Hee & Sabaj, M. H.', 1],
    ['Ng, Heok Hee & Siebert, Darrell J.', 1],
    ['Ng, Heok Hee & Tan, H. - H.', 1],
    ['Prashad, B. & Mukerji, D. D.', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    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);