function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Li, Weihai & Dong, Wenbin & Yang, Ding', 1],
    ['Li, Weihai & Li, Wenliang & Yang, Ding', 2],
    ['Li, Weihai & Murányi, Dávid & Yang, Ding', 1],
    ['Li, Weihai & Yang, Ding', 3],
    ['Li, Weihai & Yang, Juan & Yang, Ding', 2],
    ['Mo, Raorao & Wang, Guoquan & Yang, Ding & Li, Weihai', 1],
    ['Murányi, Dávid & Li, Weihai', 1],
    ['Qian, Yu-Han & Fu, Li & Jiao, Jun-Ying & Du, Yu-Zhou', 2],
    ['Qian, Yu-Han & Xiang, Jin-Hong & Bai, Xue', 1],
    ['Zhao, Meng-Yuan & Du, Yu-Zhou', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);