function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arens, Werner', 5],
    ['Buys, Sandor Christiano', 4],
    ['Danilov, Yuriy N.', 12],
    ['Doerfel, Thorleif H. & Ohl, Michael', 35],
    ['Dollfuss, H.', 34],
    ['Dörfel, Thorleif H. & Ohl, Michael', 64],
    ['Fabricius, Johann Christian', 24],
    ['Gadallah, Neveen S.', 9],
    ['H, Phong & G, P. & N, Yuriy', 5],
    ['Jahantigh, Fatemeh & Rakhshani, Ehsan & Mokhtari, Azizollah', 9],
    ['Linnaeus, Carolus', 30],
    ['Madl, M.', 5],
    ['Madl, Michael & D, Chalybion & L, Chlorion & S, Podalonia', 5],
    ['Schmid-Egger, Christian', 6],
    ['Smith, F.', 6],
    ['Other (19)', 27]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=280)',
    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);