function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agrawal, S. C. & Sharma, S. K.', 1],
    ['Gvosdev, E. V. & Kulkina, L. V.', 1],
    ['Maillard, C.', 1],
    ['Overstreet, Robin M.', 1],
    ['Pritchard, M. H.', 1],
    ['Rebecq, J. & Giudicelli, J.', 1],
    ['Travassos, L. & Teixeira de Freitas, J. F. & Bührnheim, P. F.', 1],
    ['Wang, P. - q.', 1],
    ['Wang, Yan-Yin & Wang, P. - q. & Zhang, Wen-Huah', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    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);