function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Endruweit, Marco & Min, Rui & Yang, Junxing', 1],
    ['Li, Xu & Che, Xing-Jin & Zhou, Wei', 3],
    ['Min, Rui & Yang, Jun-Xing & Chen, Xiao-Yong', 1],
    ['Min, Rui & Zhao, Yahui & Shi, Jingsong & Yang, Junxing', 1],
    ['Zhou, Chuanjiang & Ma, Wenwen & Wang, Xi & Tang, Yongtao', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=7)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);