function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 26],
    ['Arens, W.', 10],
    ['Becherer', 48],
    ['Brause, Guido Georg Wilhelm', 20],
    ['Carmes, Amanda Angélica & Dechoum, Michele de Sá', 19],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 67],
    ['Christensen, Carl C.', 11],
    ['Cremers, Georges & Aupic, Cécile', 13],
    ['Jarvis, Charlie', 35],
    ['Kessler, Michael & Smith, Alan R. & Øllgaard, Benjamin', 16],
    ['Krömer, Thorsten & Acebey, Amparo R. & Smith, Alan R.', 13],
    ['Mazumdar, Jaideep & Callmander, Martin W. & Fumeaux, Nicolas', 13],
    ['Parris, Barbara Sydney', 10],
    ['Rakotondrainibe, France & Jouy, Alain & Rouhan, Germinal', 14],
    ['Souza, Filipe Soares De & Salino, Alexandre', 17],
    ['Other (58)', 169]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=501)',
    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);