function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agarwal, S. M.', 1],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 3],
    ['Bhalerao, G. D.', 1],
    ['Bhutta, M. S. & Khan, D.', 1],
    ['Bilqees, Fatima Mujib', 4],
    ['Bilqees, Fatima Mujib & Shaikh, G. S. & Khan, Aly', 1],
    ['Cremonte, Florencia & Drago, Fabiana B.', 1],
    ['Dollfus, R. P.', 1],
    ['El-Naffar, M. K. & Khalifa, R. M.', 1],
    ['Fischthal, Jacob H. & Kuntz, Robert E', 2],
    ['Jaiswal, G. P.', 3],
    ['Kurashvili, B. E.', 2],
    ['Pinto, Hudson Alves & Melo, Alan Lane De', 1],
    ['Rensburg, Candice Jansen van & van As, Jo G. & King, Pieter H.', 1],
    ['Xue, Xiao-Feng & Song, Zi-Wei & Hong, Xiao-Yue', 3],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    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);