function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dias, Alan & Kelly, Michelle & Pinheiro, Ulisses', 5],
    ['Diaz, Maria Cristina & Nuttall, Marissa & Pomponi, Shirley A.', 2],
    ['Ekins, Merrick & Erpenbeck, Dirk & Wörheide, Gert', 3],
    ['Fassbender, Nico & Stefanoudis, Paris V', 1],
    ['Manconi, Renata & Serusi, Annalisa', 7],
    ['Schlacher-Hoenlinger, Monika A. & Pisera, Andrzej', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    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);