function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Jing & Jiang, Wanxiang & Xie, Zhicai', 1],
    ['Dózsa-Farkas, Klára & Felföldi, Tamás & Nagy, Hajnalka', 1],
    ['Friend, Hilderic', 1],
    ['Martinsson, Svante & Klinth, Mårten & Erséus, Christer', 3],
    ['Martinsson, Svante & Rota, Emilia & Erseus, Christer', 2],
    ['Martinsson, Svante & Rota, Emilia & Erséus, Christer', 1],
    ['Torii, Takaaki', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);