function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bray, Rodney A. & Cribb, Thomas H. & Barker, Stephen C.', 3],
    ['Cribb, Thomas H. & Anderson, G. R. & Bray, Rodney A.', 4],
    ['Diaz Morales, Pablo Elias & Cutmore, Scott C. & Cribb, Thomas H.', 4],
    ['Hafeezullah, M. & Siddiqi, Ather H.', 1],
    ['Mamaev, Y. L.', 1],
    ['Yamaguti, S.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);