function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Kandari, Manal Abdulrahman & Khalaji-Pirbalouty, Valiallah', 9],
    ['Anil, Pathan', 2],
    ['Anil, Pathan & Bruce, Niel L. & Samson, Rokkarukala', 2],
    ['Barnard, Keppel Harcourt', 3],
    ['Bruce, Niel L.', 4],
    ['Bruce, Niel L. & Wetzer, Regina', 4],
    ['Khalaji-Pirbalouty, Valiallah', 4],
    ['Khalaji-Pirbalouty, Valiallah & Bruce, Niel L.', 8],
    ['Khalaji-Pirbalouty, Valiallah & Gagnon, Jean-Marc', 16],
    ['Khalaji-Pirbalouty, Valiallah & Raupach, Michael J.', 3],
    ['Khalaji-Pirbalouty, Valiallah & Wägele, Johann-Wolfgang', 8],
    ['Leach, William Elford', 3],
    ['Schotte, Marilyn & Kensley, Brian', 16],
    ['Vieira, Pedro E. & Queiroga, Henrique & Costa, Filipe O.', 8],
    ['Wall, Adam R. & Bruce, Niel L. & Wetzer, Regina', 6],
    ['Other (20)', 26]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=122)',
    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);