function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aken’Ova, T. O. & Cribb, Thomas H.', 2],
    ['Bray, Rodney A.', 1],
    ['Bray, Rodney A. & Justine, Jean-Lou', 1],
    ['Gibson, David Ian', 1],
    ['Gibson, David Ian & Bray, Rodney A.', 1],
    ['Jaiswal, Neeshma & Upadhyay, S. K. & Malhotra, Anshu', 1],
    ['Machida, Masaaki', 1],
    ['Machida, Masaaki & Araki, Jun', 1],
    ['Martin, Storm B. & Cutmore, Scott C. & Ward, Selina', 6],
    ['Thompson, A. B. & Margolis, Leo', 1],
    ['Zdzitowiecki, Krzysztof & Pisano, E. & Vacchi, M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);