function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Armitage, Brian J. & Harris, Steven C. & Blahnik, Roger J.', 2],
    ['Armitage, Brian J. & Harris, Steven C. & Holzenthal, Ralph W.', 2],
    ['Baturina, N. S.', 1],
    ['Embacher, G. & Malicky, H. & A. E & R. A', 1],
    ['Holzenthal, Ralph W. & Contents, Trond Andersen Table Of', 25],
    ['Johanson, Kjell Arne & Eriksson, Maertha & Mueller, Hanna', 3],
    ['Malicky, H.', 1],
    ['Malicky, H. & I, St. & D, V.', 2],
    ['Malicky, Hans', 4],
    ['Malicky, Hans & Melnitsky, Stanislav I. & Ivanov, Vladimir D.', 3],
    ['Mey, Wolfram & Malicky, Hans', 2],
    ['Razo-González, María', 1],
    ['Weidlich, Michael', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);