function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barahona-Segovia, Rodrigo M. & Guzmán, Vicente Valdés', 2],
    ['Ebejer, Martin J. & Gatt, Paul', 1],
    ['Gillung, Jéssica Paula', 2],
    ['Gillung, Jéssica Paula & Carvalho, Claudio José Barros De', 1],
    ['González, Christian R. & Elgueta, Mario & Ramirez, Francisco', 1],
    ['Kehlmaier, Christian & Almeida, Jorge Mota', 2],
    ['Kehlmaier, Christian & Gharali, Babak & Jahromi, Bahareh Majnon', 1],
    ['Latreille, Pierre André', 2],
    ['MacGowan, I. & Vikhrev, N. E. & Krivosheina, M. G.', 1],
    ['Nartshuk, E. P. & Bagachanova, A. K.', 4],
    ['Schlinger, Evert I.', 4],
    ['Westwood, John Obadiah', 4],
    ['Winterton, Shaun L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);