function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Enghoff, Henrik', 136],
    ['Enghoff, Henrik & Akkari, Nesrine', 3],
    ['Enghoff, Henrik & Frederiksen, Sara B.', 10],
    ['Frederiksen, Sara B.', 6],
    ['Frederiksen, Sara B. & Enghoff, Henrik', 15],
    ['Golovatch, Sergei I. & Wesener, Thomas', 1],
    ['Henrik Enghoff', 7],
    ['Hollier, John & Stöckli, Eduard & Wesener, Thomas', 16],
    ['Rosenmejer, Trine & Enghoff, Henrik', 1],
    ['Sadat-ShojaeiK, Mojgan & HaitlingerK, Ryszard & SadeghiK, Saber', 2],
    ['Shelley, Rowland M. & Golovatch, Sergei I.', 4],
    ['Vohland, Katrin & Hamer, Michelle', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=213)',
    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);