function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bolger, Thomas & Arroyo, Julio & Piotrowska, Katarzyna', 1],
    ['Dundarova, Heliana & Orlova, Maria & Anisimov, Nikolay', 8],
    ['Gomes-AlmeidaK, Brenda Karolina & DiórioK, Gabriel Félix', 6],
    ['Lin, Jian-Zhen', 1],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 2],
    ['Orlova, M. V. & Orlov, O. L.', 5],
    ['Orlova, Maria V. & Anisimov, Nikolay V.', 16],
    ['Reeves, Will K. & Durden, Lance A. & Ritzi, Christopher M.', 1],
    ['Sachanowicz, Konrad & Krištofík, Ján & Ciechanowski, Mateusz', 10],
    ['van Schaik, A. J. & Bruyndonckx, N. & Kerth, G. & Christe, P.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=51)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);