function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 2],
    ['Bray, Rodney A. & Cribb, Thomas H.', 1],
    ['El-Serafy, Sabry S. & Ramadan, Moustafa M. & Morsy, Gazaa H.', 1],
    ['Fischthal, Jacob H. & Kuntz, Robert E', 1],
    ['Gaevskaya, A. V.', 1],
    ['Leiper, R. T. & Atkinson, E. L.', 1],
    ['Linton, E.', 1],
    ['Looss, A.', 2],
    ['Odhner, T.', 3],
    ['Reimer, Lothar W.', 1],
    ['Slusarski, Wieslaw', 1],
    ['Yamaguti, S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);