function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carmes, Amanda Angélica & Dechoum, Michele de Sá', 1],
    ['Kessler, Michael & Smith, Alan R. & Øllgaard, Benjamin', 2],
    ['Matos, Fernando B. & Bohn, Amabily & Labiak, Paulo H.', 1],
    ['Shang, Hui & Liang, Zhen-Long & Zhang, Li-Bing', 1],
    ['Zhang, Li-Bing & Zhang, Liang', 1],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=7)',
    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);