function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 11],
    ['Akhmetova, Lilia & Frolov, Andrey', 1],
    ['Alekseev, Vitalii I.', 2],
    ['Berlov, E. Ya. & Shabalin, S. A.', 2],
    ['Creutzer, Christian', 4],
    ['Dupuis, Fabien', 4],
    ['Frolov, Andrey & Akhmetova, Lilia', 84],
    ['Frolov, Andrey V.', 2],
    ['Frolov, Andrey V. & Akhmetova, Lilia A. & Král, David', 2],
    ['Frolov, Andrey V. & Vishnevskaya, Maria S. & Akhmetova, Lilia A.', 2],
    ['Kaneko, Naoki & Wada, Kaoru', 3],
    ['Král, David & Šípek, Petr', 24],
    ['Masumoto, Kimio & Kiuchi, Makoto & Wang, Tai-Chuan', 2],
    ['Pérez-Hernández, Cisteil Xinum', 8],
    ['Sharp, David', 4],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=169)',
    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);