function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 4],
    ['Ghahari, Hassan & Háva, Jirí', 8],
    ['Herrmann, Andreas & Háva, Jiří', 3],
    ['Holloway, Graham J.', 3],
    ['Holloway, Graham J. & Herrmann, Andreas', 2],
    ['Háva, Jiří', 3],
    ['Háva, Jiří & Kadej, Marcin', 10],
    ['Kadej, Marcin', 4],
    ['Kadej, Marcin & Háva, Jirí', 2],
    ['Kadej, Marcin & Háva, Jiří', 24],
    ['Kadej, Marcin & Háva, Jiří & Kalík, Vladimír', 3],
    ['Kadej, Marcin & Háva, Jiří & Kitano, Takanobu', 3],
    ['Majka, Christopher G.', 5],
    ['Nakládal, Oto & Háva, Jiří', 4],
    ['Nardi, Gianluca & Hava, Jiri', 6],
    ['Other (15)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=100)',
    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);