function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annandale, N.', 3],
    ['Darwin, Charles Robert', 3],
    ['Gray, John Edward', 1],
    ['Hiro, F.', 2],
    ['Kim, Hyun Kyong & Chan, Benny K. K. & Corbari, Laure', 2],
    ['Kolosvary, G.', 2],
    ['Nilsson-Cantell, C. a.', 1],
    ['Ren, XianQiu', 1],
    ['Ross, A. & Newman, William A.', 6],
    ['Seguenza, G.', 5],
    ['Utinomi, H.', 1],
    ['Weltner, W.', 1],
    ['Woodward, H.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);