function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bernhard, Seifert', 4],
    ['Collingwood, C. A.', 2],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 2],
    ['Emery, C.', 10],
    ['Forel, A.', 38],
    ['Ghahari, Hassan & Sharaf, Mostafar R. & Aldawood, Abdulrahman S.', 2],
    ['Gratiashvili, N. & Barjadze, S.', 2],
    ['Jimoh, Bunmi Omowumi & Gomez, Kiko & Kemabonta, Kehinde Abike', 2],
    ['Kiran, Kadri & Karaman, Celal', 3],
    ['Lapeva-Gjonova, Albena & Antonova, Vera', 5],
    ['Mayr, G.', 7],
    ['Mohamed, S. & Zalat, S. & Fadl, H.', 2],
    ['Santschi, F.', 13],
    ['Ward, P. S.', 3],
    ['Wheeler, W. M.', 4],
    ['Other (11)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=113)',
    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);