function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Digirolomo, Marc F. & Blackington, Christopher O.', 1],
    ['Du, Xueyong & Slipinski, Adam & Liu, Zhenhua & Pang, Hong', 2],
    ['Ferro, Michael L. & Gimmel, Matthew L. & Harms, Kyle E.', 2],
    ['Jałoszyński, Paweł & Wakimura, Ryotaro', 8],
    ['Kolibac, Jiri', 1],
    ['Lawrence, John F.', 18],
    ['Mitter, Heinz & A, Upper', 1],
    ['Sakai, Masahiro', 1],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);