function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 4],
    ['Chin, T. - h.', 1],
    ['Cort, William W.', 1],
    ['Fuhrmann, Otto', 2],
    ['Guberlet, John E.', 1],
    ['Johnston, S. J.', 1],
    ['Lees, E. & Coombes, C.', 1],
    ['Looss, A.', 2],
    ['Lutz, Adolpho', 1],
    ['Meskal, F. H.', 1],
    ['Pigulewsky, S. W.', 3],
    ['Shakarbaev, U. A. & Akramova, F. D. & Azimov, D. A.', 1],
    ['Shtrom, Z. K.', 1],
    ['Sinitsin, D. F.', 3],
    ['Xue, Xiao-Feng & Song, Zi-Wei & Hong, Xiao-Yue', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);