function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abbott, Charles C.', 1],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Bleeker, Pieter', 1],
    ['Chen, J. T. F.', 1],
    ['Edwards, A. J. & Gill, A. C. & Abohweyere, P. O.', 1],
    ['Fowler, Henry Weed', 1],
    ['Goode, G. B. & Bean, T. H.', 1],
    ['Herre, Albert W. C. T.', 1],
    ['Ho, Hsuan-Ching & Smith, David G. & Mccosker, John E.', 2],
    ['Ji, Hwan-Sung & Kim, Jin-Koo', 1],
    ['Jordan, David Starr & Evermann, Barton Warren', 1],
    ['Jordan, David Starr & Snyder, John Otterbein', 1],
    ['Kaup, Johann Jakob', 3],
    ['Sen, T. K.', 1],
    ['Zainal Abidin, Danial Hariz & Lavoué, Sébastien', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);