function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Godunko, Roman J.', 1],
    ['Godunko, Roman J. & Vidinova, Yanka & Soldán, Tomáš', 1],
    ['Hrivniak, Ľuboš & Sroka, Pavel & Godunko, Roman J.', 1],
    ['Kluge, Nikita & Sivaruban, T. & Srinivasan, Pandiarajan', 3],
    ['Kluge, Nikita J. & Godunko, Roman J. & Apanaskevich, Dmitry A.', 1],
    ['Kłonowska-Olejnik, Małgorzata & Prokopov, Grigorii A.', 1],
    ['Martynov, Alexander V. & Godunko, Roman J.', 1],
    ['Sartori, Michel & Bauernfeind, Ernst', 2],
    ['Yanygina, L. V. & Potapova, N. K.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);