function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brues, Charles Thomas', 3],
    ['Bulbol, Mayara Medeiros & Bartholomay, Pedro Reck', 2],
    ['Guidotti, Antonia', 4],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 2],
    ['Krogmann, Lars & Austin, Andrew D. & Naumann, Ian D.', 15],
    ['Lohrmann, Volker', 2],
    ['Lohrmann, Volker & Fox, Mark & Solis, Manuel & Krogmann, Lars', 1],
    ['Lohrmann, Volker & Ohl, Michael', 20],
    ['Lohrmann, Volker & Ohl, Michael & Michalik, Peter', 4],
    ['Madl, Michael', 8],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Townes, Henry', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=78)',
    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);