function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carpenter, James M. & Gadallah, Neveen S.', 1],
    ['Fateryga, Alexander V.', 2],
    ['Fateryga, Alexander V. & Proshchalykin, Maxim Yu.', 1],
    ['Gawas, Sandesh M. & Kumar, Girish & Pannure, Arati', 2],
    ['Gusenleitner, J.', 5],
    ['Li, Ting-Jing & Bai, Yue & Chen, Bin', 2],
    ['Oehlke, J.', 1],
    ['Schmid, Christian', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);