function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alves, Philippe V. & Vieira, Fabiano M. & Santos, Cláudia P.', 1],
    ['Chamberlin, Joseph Conrad', 1],
    ['Chan, Kin Onn & Muin, Mohd Abdul & Anuar, Shahrul & Andam, Joel', 1],
    ['Farkas, Balazs & Ziegler, Thomas & Pham, Cuong The', 1],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 6],
    ['Flores-Barragan, Miguel Angel & Leon, María Patricia Velasco-de', 1],
    ['Gagnaison, Cyril & Mennecart, Bastien & Bailleul, Julien', 1],
    ['Gong, Shiping & Fritz, Uwe & Vamberger, Melita & Gao, Yangchun', 2],
    ['Hoser, Raymond', 2],
    ['Iverson, John B.', 37],
    ['Lambe L. M.', 2],
    ['Leidy, J.', 2],
    ['Sánchez-Vialas, Alberto & Calvo-Revuelta, Marta', 2],
    ['VItek, Natasha S.', 2],
    ['Čepičková, Jana & Kvaček, Jiří', 2],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=75)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);