function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Ek, Martin Fiká Č & Šípková, Hana', 3],
    ['Falamarzi, Shahram & Pütz, Andreas & Heidari, Mohammad', 1],
    ['Fikáček, Martin & Hu, Fang-Shuo & Aston, Paul & Jia, Feng-Long', 2],
    ['Hall, Eugene & Short, Andrew E. Z.', 1],
    ['Keller, Oliver & Schnepp, Kyle E. & Ashman, Krystal L.', 1],
    ['Maier, Crystal A. & Ivie, Michael A. & Johnson, James B.', 6],
    ['Perkins, Philip D. & Bergsten, Johannes', 3],
    ['Qvarnström, Martin & Fikáček, Martin & Vikberg Wernström, Joel', 2],
    ['Reyes, Scarleth Margarita Raudez', 2],
    ['Short, Andrew E. Z. & Joly, Luis J. & García, Mauricio', 2],
    ['Trujillo, Gabriel A. & Cañote, Javier', 2],
    ['Van Vondel, Bernhard J. & Ostovan, Hadi & Ghahari, Hassan', 1],
    ['Zaragoza-Caballero, Santiago & Rodríguez-Mirón, Geovanni M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);