function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amon, Diva J & Ziegler, Amanda F & Drazen, Jeffrey C', 3],
    ['Barattolo, Filippo & Ionesi, Viorel & Ţibuleac, Paul', 3],
    ['Bucur, Ioan I. & Jovanovic, Divna & Radoicic, Rajka', 2],
    ['Bucur, Ioan I. & Săsăran, Emanoil', 2],
    ['Coppejans, Eric & Leliaert, Frederik & Verbruggen, Heroen', 40],
    ['Davidson, Alisha D. & Campbell, Marnie L. & Hewitt, Chad L.', 3],
    ['Fassbender, Nico & Stefanoudis, Paris V', 8],
    ['Gestinari, Lísia Mônica De Souza & Pereira, Sonia Maria Barreto', 10],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 3],
    ['Guskova, Elena V. & Akulov, Evgeny N. & Loshchev, Sergey M.', 3],
    ['Huisman, John M. & Verbruggen, Heroen', 2],
    ['Jarvis, Charlie', 11],
    ['Kurth, Caroline & Welling, Matthew & Pohnert, Georg', 3],
    ['Lopatin, I. K. & Konstantinov, A. S.', 2],
    ['SCHLAGINTWEIT, FELIX & RASHIDI, KOOROSH & MOSAVINIA, ABDOLMAJID', 9],
    ['Other (21)', 26]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=130)',
    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);