function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Hu, Renchuan & Liao, Xiaowen & Luo, Binsheng & Liu, Cheng', 1],
    ['Jarvis, Charlie', 1],
    ['Liao, Jun-Jie & Chen, You-Shen', 2],
    ['Merle, Didier & Pacaud, Jean-Michel & Métais, Grégoire', 2],
    ['Nuraliev, Maxim S. & Lyskov, Dmitry F. & Kuznetsov, Andrey N.', 2],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);