function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Berggren, Kai & Aarvik, Leif & Huemer, Peter & Lee, Kyung Min', 1],
    ['Busck, August', 1],
    ['Chakraborty, Kajal & Antony, Tima', 1],
    ['Meyrick, Edward', 5],
    ['Philpott, Alfred', 2],
    ['Pohl, Greg & Anweiler, Gary & Schmidt, Christian', 2],
    ['Prins, Jurate De & Brito, Rosângela', 20],
    ['Richert, Arnold & Busse, Rainer & Theimer, Franz', 1],
    ['Walsingham, Thomas de Grey Lord', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    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);