function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Huebner, Jeremy Joshua & Chemyreva, Vasilisa', 21],
    ['Kim, Sangjin & Ckrkic, Jelisaveta & Tomanovic, Zeljko', 1],
    ['Kim, Sangjin & Sohn, Juhyeong & Kim, Hyojoong', 2],
    ['Li, Fang & Cui, Shanshan & Huang, Yixin & Wang, Xuan', 1],
    ['Plecas, Milan & Zikic, Vladimir & Kocic, Korana', 3],
    ['Zhu, Jia-Chen & Fang, Shu-Qian & Zhao, Qing-Yan & Yao, Jun-Li', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);