function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Yang, Yu-Xia & Okushima, Yûichi & Yang, Xing-Ke', 5],
    ['Yang, Yu-Xia & Su ,, Jun-Yan & Yang, Xing-Ke', 10],
    ['Yang, Yu-Xia & Yang, Xing-Ke', 1],
    ['Yang, Yuxia & Li, Limei & Guan, Kaile & Yang, Xingke', 17],
    ['Yang, Yuxia & Li, Limei & Yang, Xingke', 6],
    ['Yang, Yuxia & Qi, Yaqing & Yang, Xingke', 4],
    ['Yang, Yuxia & Su, Junyan & Yang, Xingke', 6],
    ['Yang, Yuxia & Yang, Xingke', 8],
    ['Zhang, Lulu & Yang, Yuxia & Okushima, Yûichi', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=74)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);