function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 15],
    ['Ghahari, Hassan & Háva, Jirí', 22],
    ['Hava, Jiri & Abdel-Dayem, Mahmoud S. & Aldhafer, Hathal M.', 15],
    ['Herrmann, Andreas & Háva, Jiří', 14],
    ['Háva, J.', 12],
    ['Háva, Jiří', 36],
    ['Háva, Jiří & Herrmann, Andreas', 25],
    ['Háva, Jiří & Kadej, Marcin', 32],
    ['Kadej, Marcin & Háva, Jiří', 45],
    ['Khachikov, E. A. & Háva, J. & Poushkova, S. V.', 9],
    ['Majka, Christopher G.', 13],
    ['Nakládal, Oto & Háva, Jiří', 15],
    ['Nardi, Gianluca & Hava, Jiri', 26],
    ['Zahradník, Petr & Háva, Jiří', 9],
    ['Zhou, Yu-Lingzi & Nicholls, James A. & Liu, Zhen-Hua', 9],
    ['Other (73)', 151]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=448)',
    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);