function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carroll, Robert L.', 1],
    ['Eltink, Estevan & Dias, Eliseu V. & Dias-Da-Silva, Sérgio', 4],
    ['Liu, Jun', 1],
    ['Polley, Brendan P. & Reisz, Robert R.', 8],
    ['Rinehart, Larry & Lucas, Spencer G. & Schoch, Rainer Rolf', 1],
    ['Schoch Correspondence, Rainer R.', 2],
    ['Schoch, Rainer R.', 3],
    ['Schoch, Rainer R. & Witzmann, Florian', 3],
    ['Sigurdsen, Trond', 1],
    ['Steyer, Jean-Sébastien & Peecook, Brandon R. & Arbez, Thomas', 1],
    ['Warren, Anne', 1],
    ['Werneburg, Ralf & Štamberg, Stanislav & Steyer, Jean-Sébastien', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);