function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Garces, Jhoana M. & Bauernfeind, Ernst & Freitag, Hendrik', 1],
    ['Kluge, Nikita J.', 3],
    ['Kluge, Nikita J. & Novikova, Eugenia A.', 3],
    ['Muthukatturaja, Marimuthu & Balasubramanian, Chellaiah', 2],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Piraonapicha, Kanyakorn & Sangpradub, Narumon', 1],
    ['Srinivasan, Pandiarajan & Rosi, Bernath & Isack, Rajasekaran', 1],
    ['Srinivasan, Pandiarajan & Sivaruban, T. & Barathy, S.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);