function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acevedo-Rodriguez, Pedro', 3],
    ['Acevedo-Rodriguez, Pedro & Somner, Genise Vieira', 6],
    ['Araújo, Diogo & Alves, Marccus', 3],
    ['Jarvis, Charlie', 2],
    ['Linnaeus, Carolus', 7],
    ['Maia, Valéria Cid & Mascarenhas, Bernardo', 2],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 1],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    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);