function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alarie, Yves', 1],
    ['Benetti, Cesar João & Hamada, Neusa', 2],
    ['Darilmaz, Mustafa C. & Kiyak, Suat', 14],
    ['Hayashi, Masakazu & Iwata, Tomofumi & Yoshitomi, Hiroyuki', 11],
    ['Hájek, Jiří & Reiter, Antonín', 1],
    ['Jia, Fenglong & Vondel, Bernhard van', 24],
    ['Keller, Oliver & Schnepp, Kyle E. & Ashman, Krystal L.', 3],
    ['Majka, Christopher', 3],
    ['Majka, Christopher & van Vondel, Bernhard & Webster, Reginald', 13],
    ['Perissinotto, Renzo & Bird, Matthew S. & Bilton, David T.', 1],
    ['Prokin, A. A. & Sazhnev, A. S.', 1],
    ['Rogers, D. Christopher & Cruz-Rivera, Edwin', 1],
    ['Sheth, Sayali D. & Ghate, Nt. V. & Vondel, Bernhard J.', 1],
    ['Van Vondel, Bernhard J. & Ostovan, Hadi & Ghahari, Hassan', 13],
    ['Vondel, Bernhard Johannes Van & Alarie, Yves', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=90)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);