function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Kirk-Spriggs, Ashley H.', 18],
    ['Kirk-Spriggs, Ashley H. & Wiegmann, Brian M.', 43],
    ['Klymko, John & Marshall, Stephen A.', 36],
    ['Lindsay, Kate G. & Klymko, John & Marshall, Stephen A.', 6],
    ['McAlpine, David', 1],
    ['Mello, Ramon Luciano', 4],
    ['Mello, Ramon Luciano & Pereira-Colavite, Alessandre', 3],
    ['Pollock, J. N.', 7],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=119)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);