function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bamber, Roger N & Bird, Graham & Błażewicz-Paszkowycz, Magdalena', 1],
    ['Bamber, Roger N.', 8],
    ['Edgar, Graham J.', 2],
    ['Tait, Valerie K. & Conlan, Kathleen E. & Dittmann, Sabine', 1],
    ['Tanabe, Yuki & Hayashi, Ryota & Tomioka, Shinri & Kakui, Keiichi', 2],
    ['Tanabe, Yuki & Kakui, Keiichi', 2],
    ['Wi, Jin Hee & Jeong, Man-Ki & Kang, Chang-Keun', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    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);