function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gilchrist, J. D. F. & Thompson, W. Wardlaw', 4],
    ['Goode, G. B. & Bean, T. H.', 1],
    ['Guichenot, A.', 1],
    ['Iwatsuki, Yukio & Kume, Masayuki & Yoshino, Tetsuo', 1],
    ['Jordan, David Starr', 1],
    ['Peters, Wilhelm Carl Hartwig', 1],
    ['Poey, F.', 1],
    ['Randall, John Ernest Dr. & Caldwell, David K.', 1],
    ['Richardson, John', 2],
    ['Steindachner, F.', 1],
    ['Tirant, G.', 1],
    ['Yukio Iwatsuki & Kent E. Carpenter', 2],
    ['de Laporte Castelnau La Ferté-Sénectère, Francis L.', 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);