function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Burks, R. A.', 2],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 16],
    ['Du, Su-Jie & Yefremova, Zoya & Ye, Fu-Yu & Zhu, Chao-Dong', 1],
    ['Gadallah, Neveen S. & Yefremova, Zoya A.', 3],
    ['Hansson, Christer & Navone, Paolo', 19],
    ['Kosheleva, O. V.', 1],
    ['Madl, Michael & M, Atoposoma & W, Diglyphus', 2],
    ['Perry, Ryan K. & Heraty, John M.', 3],
    ['Plecas, Milan & Zikic, Vladimir & Kocic, Korana', 1],
    ['Walker, Francis', 2],
    ['Wan, Wei-Jie & Du, Su-Jie & Hansson, Christer & Liu, Wan-Xue', 1],
    ['Ye, Fu-Yu & Zhu, Chao-Dong & Yefremova, Zoya & Liu, Wan-Xue', 1],
    ['Yefremova, Zoya A.', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);