function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Babenko, Anatoly & Stebaeva, Sophya & Turnbull, Matthew S.', 6],
    ['Gabriel C. Queiroz & Maria Cleide De Mendonça', 1],
    ['H. - J & Burkhardt, U.', 2],
    ['Jantarit, Sopark & Bedos, Anne & Deharveng, Louis', 1],
    ['Lawrence, Peter N.', 1],
    ['Potapov, Mikhail B. & Janion-Scheepers, Charlene', 7],
    ['Thibaud, Jean-Marc', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);