function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ding, Yan & Yan, Bin & Yu, Xiao-Fei & Yang, Mao-Fa', 2],
    ['Qin, Dao-Zheng & Zhang, Ya-Lin', 22],
    ['Wang, Yi-Mei & Xu, Ye & Dmitriev, Dmitry A.', 3],
    ['Xu, Ye & Wang, Yu-Ru & Lu, Si-Han & Dietrich, Christopher H.', 1],
    ['Yu, Xiaofei & Yang, Maofa', 35]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    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);