function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bai, G. - m. & Liu, Z. - m.', 1],
    ['Chin, Ta-hsiung & Ku, Yiming', 2],
    ['Faust, E. C.', 2],
    ['Fischthal, Jacob H. & Kuntz, Robert E', 1],
    ['Rohde, Klaus', 1],
    ['Rysavy, B.', 1],
    ['Sahay, S. & Sahay, U.', 1],
    ['Skrjabin, K. I. & Evranova, V. G.', 1],
    ['Tang, C. & Jiang, C. - f.', 1],
    ['Travassos, L.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);