function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Jarvis, Charlie', 7],
    ['Linnaeus, Carolus', 3],
    ['Merrill, Elmer Drew & Perry, Lily May', 5],
    ['Ordas, Jorge Anton D. & Pinarok, Neil Alejandro A.', 2],
    ['Quang, Bui Hong & Nguyen, Khang Sinh & Le, Tuan Anh', 1],
    ['Ridley, Henry Nicholas', 1],
    ['Royen, Pieter van', 1],
    ['Sunojkumar, P.', 1],
    ['Xu, Yi-Da & Wang, Rui-Jiang', 1],
    ['Xu, Yi-Da & Zhang, Ying & Wang, Rui-Jiang', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);