function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bunchalee, Pasakorn & Johnson, David M. & Murray, Nancy A.', 3],
    ['Burck, William', 1],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Diels, Friedrich Ludwig Emil', 4],
    ['Turner, I. M.', 3],
    ['Turner, Ian M. & Utteridge, Timothy M. A.', 22],
    ['Wiya, Chattida & Chaowasku, Tanawat', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    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);