function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Kovařík, František & Lowe, Graeme & Stockmann, Mark', 1],
    ['Lourenco, Wilson R. & Kosulic, Ondrej', 2],
    ['Monod, Lionel & Duperre, Nadine & Harms, Danilo', 5],
    ['Nawanetiwong, Wasin & Kosulic, Ondrej & Warrit, Natapot', 1],
    ['Prendini, Lorenzo & Ehrenthal, Valentin L. & Loria, Stephanie F.', 1],
    ['Sulakhe, Shauri & Deshpande, Shubhankar & Dandekar, Nikhil', 1],
    ['Tang, Victoria', 1],
    ['Yin, Shijin & Zhang, Yunfeng & Pan, Zhaohui & Li, Shaobin', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);