function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Glück, Franziska U. & Stöhr, Sabine & Bochert, Ralf', 2],
    ['Gondim, Anne I. & Alonso, Carmen & Dias, Thelma L. P.', 1],
    ['Granja-Fernández, Rebeca & Hendrickx, Michel E.', 1],
    ['Madeira, Patrícia & Kroh, Andreas & Cordeiro, Ricardo', 1],
    ['Okanishi, Masanori & Oba, Yuichi & Fujita, Yoshihisa', 1],
    ['Stöhr, Sabine & Conand, Chantal & Boissin, Emilie', 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);