function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bray, Rodney A. & Cribb, Thomas H.', 1],
    ['Gaevskaya, A. V.', 2],
    ['Gibson, David Ian & Bray, Rodney A.', 1],
    ['Margolis, Leo', 1],
    ['Orias, J. D. & Noble, Elmer Ray & Alderson, G. D.', 1],
    ['Ramadan, M. M.', 1],
    ['Tkachuk, L. P.', 1],
    ['Yamaguti, S.', 2],
    ['Zdzitowiecki, Krzysztof', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    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);