function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Albano, Paolo G. & Steger, Jan & Bakker, Piet A. J.', 3],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 3],
    ['Bakker, Piet A. J. & Albano, Paolo G.', 11],
    ['Cecalupo, Alberto & Perugia, Alberto', 61],
    ['Cecalupo, Alberto & Perugia, Ivan', 3],
    ['Dall, William Healey', 1],
    ['Darragh, Thomas A.', 2],
    ['Gerdes, Klaas & Kihara, Terue Cristina & Martinez Arbizu, Pedro', 1],
    ['Hansen, Thomas', 9],
    ['Harzhauser, Mathias & Guzhov, Aleksandr & Landau, Bernard', 5],
    ['Leal, José H.', 1],
    ['Luca, Javier Di & Zelaya, Diego G.', 8],
    ['Mariottini, Paolo & Smriglio, Carlo & Oliverio, Marco', 1],
    ['Sacchetti, Claudia & Landau, Bernard & Ávila, Sérgio P.', 5],
    ['Thivaiou, Danae & Harzhauser, Mathias & Koskeridou, Efterpi', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=117)',
    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);