function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blatchley, W. S.', 1],
    ['Carpintero, Diego Leonardo', 25],
    ['Drake, Carl J. & Harris, H. M.', 3],
    ['Gross, Gordon F.', 3],
    ['Herring, Jon L.', 1],
    ['Kirkaldy, George Willis', 3],
    ['Reuter, Odo Morannal', 1],
    ['Usinger, Robert L.', 2],
    ['Yamada, Kazutaka & Hirowatari, Toshiya', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);