function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cresson, Ezra T.', 1],
    ['Harrison, Roy A.', 1],
    ['Loew, Hermann', 1],
    ['Mailoch, J. R.', 3],
    ['Mathis, Wayne N.', 1],
    ['Mathis, Wayne N. & Marinoni, Luciane', 13],
    ['McAlpine, D. K.', 29],
    ['McAlpine, David K.', 2],
    ['Munari, L.', 32],
    ['Munari, Lorenzo', 49],
    ['Munari, Lorenzo & Almeida, Jorge Mota', 2],
    ['Munari, Lorenzo & Kirk-Spriggs, Ashley H. & Mcgregor, Gillian K.', 11],
    ['O\'Grady, Patrick M & Pak, Nina', 24],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Sinclair, Bradley J.', 16],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=189)',
    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);