function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Albornoz-Garzón, Juan G. & Conde-Saldaña, Cristhian C.', 1],
    ['Batista-Silva, Valéria Flávia & Frota, Augusto', 1],
    ['Fowler, Henry Weed', 1],
    ['Géry, J.', 1],
    ['Ingenito, L. F. S. & Buckup, P. A.', 1],
    ['Kner, R.', 1],
    ['Londoño-Burbano, Alejandro & Román-Valencia, César', 8],
    ['Lucila C. Protogino & Amalia M. Miquelarena & Hugo L. López', 1],
    ['Myers, G. S.', 1],
    ['Ota, Renata Rúbia & Deprá, Gabriel de Carvalho', 1],
    ['Smith, Welber Senteio & Halcsik, Leticia', 1],
    ['Steindachner, F.', 1],
    ['Sébastien Brosse & Fréderic Melki & Régis Vigouroux', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    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);