function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cantell, Carl-Erik', 2],
    ['Coe, W. R.', 1],
    ['Hookabe, Natsumi & Schwartz, Megan L. & Kajihara, Hiroshi', 3],
    ['Hosagoudar, V. B. & Robin, P. J. & Shivaraju, B.', 1],
    ['Kajihara, Hiroshi', 2],
    ['Mendes, Cecili B. & Matthews-Cascon, Helena & Norenburg, Jon L.', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);