function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Guo, Wen & Wang, Mengna & Li, Haotian & Wang, Chunming', 1],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 1],
    ['Kito, Kenji & Nakamura, Tomoaki', 1],
    ['Nara, Bezerra Tania & Ellen, Pape & Freija, Hauquier', 1],
    ['Pinto, Taciana Kramer & Neres, Patricia Fernandes', 1],
    ['Venekey, Virag & Gheller, Paula F. & Kandratavicius, Noelia', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=6)',
    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);