function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 1],
    ['Cai 1, Yue & Nie *, Yong & Zhao, Heng & Wang, ZiMin', 3],
    ['Ghahari, H. & Hayat, R. & Tabari, M. & Ostovan, H. & Imani, S.', 1],
    ['Ghahari, H. & M. G & R, Blepharopsis & C, Empusa', 3],
    ['Linnaeus, Carolus', 2],
    ['Nie, Yong & Cai, Yue & Gao, Yang & Yu, De-Shui & Wang, Zi-Min', 3],
    ['Nie, Yong & Cai, Yue & Zhao, Heng & Zhou, ZhengYu', 2],
    ['Nie, Yong & Wang, Zi-Min & Zhou, Zheng-Yu & Zhao, Heng', 1],
    ['Nie, Yong & Yu, De-Shui & Wang, Cheng-Fang & Liu, Xiao-Yong', 28],
    ['Nie, Yong & Zhao, Heng & Wang, ZiMin & Zhou, ZhengYu', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    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);