function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cantone, Stefano & Di Giulio, Andrea', 1],
    ['Cedric A. Collingwood & Donat Agosti & Mostafa R. Sharaf', 1],
    ['Escárraga, Mayron & Guerrero, Roberto J.', 10],
    ['Espadaler, X.', 1],
    ['Ghahari, Hassan & Sharaf, Mostafar R. & Aldawood, Abdulrahman S.', 1],
    ['Guénard, Benoit & Mccaffrey, Katherine A. & Lucky, Andrea', 1],
    ['Ivanov, Kaloyan', 1],
    ['Lapeva-Gjonova, Albena & Antonova, Vera', 2],
    ['Mayr, G.', 2],
    ['Ulysséa, Mônica Antunes & Prado, Lívia Pires do', 1],
    ['Ward, P. S.', 3],
    ['Wild, A. L.', 10],
    ['Wild, Alexander L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);