function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barkalov, Anatolij V.', 22],
    ['Barkalov, Anatolij V. & Ichige, Katsuyoshi', 5],
    ['Barkalov, Anatolij V. & Ståhls, Gunilla', 43],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 16],
    ['Heimburg, Helge & Doczkal, Dieter & Holzinger, Werner E.', 12],
    ['Khaganinia, S. & Kazerani, F.', 15],
    ['Kočić, Anja & Vujić, Ante & Tot, Tamara', 65],
    ['MAZáNEK, Libor & VONIČKA, Pavel & PREISLER, JiřÍ', 19],
    ['Mutin, V. A.', 7],
    ['Mutin, V. A. & Barkalov, A. V.', 5],
    ['Prokhorov, A. V. & Popov, G. V. & Shparyk, V. Yu.', 6],
    ['Pétremand, Gaël & Speight, Martin C. D. & Castella, Emmanuel', 4],
    ['Ricarte, Antonio & Rotheray, Graham E. & Lyszkowski, Richard M.', 21],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 15],
    ['Stahls, Gunilla & Barkalov, Anatolij V.', 9],
    ['Other (17)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=285)',
    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);