function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blake, James A.', 12],
    ['Dean, Harlan K. & Blake, James A.', 1],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 8],
    ['Glasby, Christopher J. & Timm, Tarmo & Muir, Alexander I.', 1],
    ['McIntosh, William C.', 1],
    ['Mikac, Barbara', 1],
    ['Tasso, Vicente & El Haddad, Mustapha & Assadi, Carolina', 1],
    ['Zhadan, Anna', 8],
    ['Zhadan, Anna & Stupnikova, Alexandra & Neretina, Tatiana', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);