function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Domingues, Marcus V. & Boeger, Walter A.', 2],
    ['Justine, Jean-Lou', 3],
    ['Justine, Jean-Lou & Henry, Émilie', 1],
    ['Justine, Jean-Lou & Sigura, Aude', 1],
    ['Lopes, Daniela A. & Mainenti, Adriana & Sanches, Magda', 3],
    ['Mendoza-Garfias, Berenit & García-Prieto, Luis', 2],
    ['Porter, Megan & Barton, Diane P. & Francis, Nidhish', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);