function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carpenter, James M.', 5],
    ['Carpenter, James M. & Brown, Graham R.', 3],
    ['Gawas, Sandesh M. & Kumar, Girish & Pannure, Arati', 3],
    ['Gusenleitner, J.', 3],
    ['Kumar, Girish P. & Carpenter, James M. & Kishore, Lambert', 1],
    ['Kyu, Jeong & Yamane, Seiki', 16],
    ['Nguyen, Lien Thi Phuong', 4],
    ['Nguyen, Lien Thi Phuong & Tran, Ngat Thi & Bui, Dien Trong', 4],
    ['Selis, Marco', 2],
    ['Zhang, Xue & Chen, Bin & Li, Ting-Jing', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=42)',
    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);