function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angel, M. F. & Verrier, M. L.', 1],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Becker, V. E.', 1],
    ['Beebe, W.', 2],
    ['Bolin, R. L.', 2],
    ['Borodin, N. A.', 1],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 7],
    ['Gilbert, Charles H.', 3],
    ['Goode, G. B. & Bean, T. H.', 2],
    ['Goren, Menachem & Galil, Bella S.', 2],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 6],
    ['Parr, A. E.', 6],
    ['Schwarzhans, Werner & Ohe, Fumio & Tsuchiya, Yuki', 3],
    ['Tåning, Å. V.', 7],
    ['Wisner, R. L.', 4],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    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);