function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bankov, Nikola & Todorov, Milcho & Ganeva, Anna', 26],
    ['Dangeard, Pierre Clement Augustin', 1],
    ['Edmondson, Charles Howard & Kingman, Robert Hills', 1],
    ['Gobi, Christoph Jakoblewitsch', 1],
    ['Leidy, Joseph', 1],
    ['Rothe, Nina & Gooday, Andrew J. & Cedhagen, Tomas & Fahrni, José', 7],
    ['Sharma, B. K. & Sharma, Sumita', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    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);