function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Breedy, Odalisca & Cairns, Stephen D. & Häussermann, Verena', 2],
    ['Breedy, Odalisca & Guzman, Hector M.', 2],
    ['Breedy, Odalisca & Rouse, Greg W. & Stabbins, April', 4],
    ['Horvath, Elizabeth Anne', 6],
    ['Sampaio, I ́ ris & Beuck, Lydia & Freiwald, Andre ́', 2],
    ['Williams, Gary C. & Breedy, Odalisca', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);