function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Buffington, Matthew L. & Forshage, Mattias & Liljeblad, Johan', 2],
    ['Buffington, Matthew L. & Gates, Michael William', 1],
    ['Buffington, Matthew L. & Noort, Simon van', 23],
    ['Dong, Ying-Ying & Liu, Zhiwei & Wang, Yi-Ping & Chen, Xue- Xin', 16],
    ['LIU, ZHIWEI', 6],
    ['LIU, ZHIWEI & ENGEL, MICHAEL S. & GRIMALDI, DAVID A.', 2],
    ['Liu, Zhiwei & Ronquist, Fredrik & Nordlander, Göran', 79],
    ['Noort, Simon van & Buffington, Matthew L.', 38],
    ['Noort, Simon van & Buffington, Matthew L. & Forshage, Mattias', 3],
    ['Rajmohana, K. & Bijoy, C. & Patra, S.', 2],
    ['Weld, Lewis H.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=173)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);