function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulbol, Mayara Medeiros & Bartholomay, Pedro Reck', 2],
    ['Krogmann, Lars & Austin, Andrew D. & Naumann, Ian D.', 15],
    ['Lohrmann, Volker & Fox, Mark & Solis, Manuel & Krogmann, Lars', 1],
    ['Lohrmann, Volker & Ohl, Michael', 4],
    ['Madl, Michael', 2],
    ['Townes, Henry', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);