function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araya, Juan Francisco & Newman, William A.', 1],
    ['Buckeridge, John S.', 1],
    ['Chan, Benny K. K. & Dreyer, Niklas & Gale, Andy S.', 3],
    ['Chan, Benny K. K. & Prabowo, Romanus Edy & Lee, Kwen-Shen', 1],
    ['Foster, B. a.', 3],
    ['Jones, Diana S.', 6],
    ['Newman, William A. & Ross, A.', 5],
    ['Pilsbry, Henry A.', 1],
    ['Pitriana, Pipit & Jones, Diana S. & Corbari, Laure', 4],
    ['Withers, T. H.', 1],
    ['Young, Paulo S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);