function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bai, Haiyan & Chang, Yu & Shih, Chungkun & Ren, Dong', 4],
    ['Bakkes, Deon K. & Sole, Catherine L. & Mansell, Mervyn W.', 7],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 2],
    ['Lu, Xiumei & Zhang, Weiwei & Ohl, Michael & Liu, Xingyue', 2],
    ['Makarkin, Vladimir N.', 2],
    ['Makarkin, Vladimir N. & Archibald, S. Bruce', 2],
    ['Peng, Yuanyuan & Makarkin, Vladimir N. & Wang, Xiaodong', 2],
    ['Peng, Yuanyuan & Makarkin, Vladimir N. & Yang, Qiang & Ren, Dong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);