function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bukejs, Andris', 1],
    ['Fabricius, Johann Christian', 4],
    ['Fanti, Fabrizio & Damgaard, Anders Leth', 3],
    ['Fanti, Fabrizio & Ghahari, Hassan', 20],
    ['Fanti, Fabrizio & Pankowski, Maximilian G.', 3],
    ['Kazantsev, S. V.', 6],
    ['Kazantsev, Sergey V.', 4],
    ['Kiesenwetter, E. A. H. von', 18],
    ['Linnaeus, Carolus', 34],
    ['Müller, Otto Friedrich', 2],
    ['Pérez-Hernández, Cisteil Xinum', 10],
    ['Scopoli, G. A.', 2],
    ['Valenzuela, Enrique & Baena, Manuel', 2],
    ['Yang, Yu-Xia & Yang, Xing-Ke', 3],
    ['Yildirim, E. & Kopetz, A. & Bulak, Y.', 7],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=124)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);