function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araújo-Silva, Catarina L. & Froufe, Elsa & Larsen, Kim', 4],
    ['Bamber, Roger N.', 4],
    ['Larsen, Kim & Blazewicz-Paszkwycz, Magdalena', 2],
    ['Larsen, Kim & Hansknecht, Tom', 3],
    ['Weigmann, Simon & Guerrero-Kommritz, Jürgen', 3],
    ['Wi, Jin Hee & Suh, Hae Lip & Yu, Ok Hwan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);