function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Costa, Ana Raíssa Cunha & Passamani, Marcelo', 1],
    ['Don E. Wilson & Russell A. Mittermeier', 1],
    ['Jansen, Martin & Engler, Marc & Blumer, Luka Moritz', 1],
    ['Pereira, Alan Deivid & Bazilio, Sergio & Orsi, Mário Luís', 1],
    ['Pierre, Meshach A. & Ignacio, Leroy & Paemelaere, Evi A. D.', 1],
    ['TEDFORD R. H. & WANG X. & TAYLOR B. E.', 2],
    ['W. Christopher Wozencraft', 2],
    ['Wilson, Don E. & Reeder, DeeAnn', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);