function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Du, Rui & Wu, Fang & Gate, Genevieve M. & Dai, Yu-Cheng', 5],
    ['Fryssouli, Vassiliki & Polemis, Elias & Typas, Milton A.', 1],
    ['Liu, Zhan-Bo & Zhou, Hong-Min & Liu, Hong-Gao & Yuan, Yuan', 3],
    ['Xu, Tai-Min & Sun, Yi-Fei & Liu, Shun & Song, Chang-Ge', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 4, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);