function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Gerald R. Dr.', 1],
    ['Anthony C. Gill & Alasdair J. Edwards', 2],
    ['Bleeker, Pieter', 1],
    ['Boulenger, George Albert', 1],
    ['Gill, Anthony C. & Edwards, Alasdair J.', 2],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 1],
    ['Schultz, Leonard P.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);