function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benetti, Cesar J. & Gustafson, Grey T. & Hamada, Neusa', 2],
    ['Budaev, F. A. & Eremeeva, N. I. & Efimov, D. A.', 1],
    ['Darilmaz, Mustafa C. & Ahmed, Zubair', 2],
    ['Darilmaz, Mustafa C. & Kiyak, Suat', 4],
    ['Hendrich, Lars & Balke, Michael', 1],
    ['Hájek, Jiří', 3],
    ['Hájek, Jiří & Reiter, Antonín', 8],
    ['Megna, Yoandri S. & Balke, Michael & Apenborn, Rico', 10],
    ['Perissinotto, Renzo & Bird, Matthew S. & Bilton, David T.', 6],
    ['Ramahandrison, Andriamirado Tahina & Rakouth, Bakolimalala', 5],
    ['Ribera, Ignacio & Hernando, Carles & Cieslak, Alexandra', 3],
    ['Suprayitno, Nano & Narakusumo, Raden Pramesa', 8],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    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);