function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Fitzgerald, Brian M. & Sirvid, Philip J.', 6],
    ['Levi, H. W., Levi, L. R.', 1],
    ['Lowry, J. K. & Myers, A. A.', 1],
    ['Rix, Michael G. & Roberts, J. D. & Harvey, Mark S.', 1],
    ['Santos, Adalberto J. & Rheims, Cristina A.', 7],
    ['Souza, Lucas Henrique Bonfim & Brescovit, Antonio Domingos', 1],
    ['Wunderlich, Jörg', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);