function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amon, Diva J & Ziegler, Amanda F & Kremenetskaia, Antonina', 6],
    ['Bohn, Jens Michael', 1],
    ['Bribiesca-Contreras, Guadalupe & Dahlgren, Thomas G.', 1],
    ['Durán-Ramírez, Carlos Alberto & Dias, Roberto Júnio Pedroso', 1],
    ['Gerdes, Klaas & Kihara, Terue Cristina & Martinez Arbizu, Pedro', 7],
    ['Haeckel, E. H. P. A.', 1],
    ['Kašćelan, Slavica & Mandić, Sreten & Radović, Ivica', 1],
    ['Luna-Cruz, Ana K. & Hendrickx, Michel E.', 1],
    ['Madeira, Patrícia & Kroh, Andreas & Cordeiro, Ricardo', 6],
    ['O’Loughlin, P. Mark & Mackenzie, Melanie & VandenSpiegel, Didier', 1],
    ['Samyn, Yves & Vandenspiegel, Didier', 6],
    ['THANDAR, AHMED S.', 1],
    ['Thandar, Ahmed S.', 7],
    ['Thandar, Ahmed S. & Rambaran, Ryan', 4],
    ['Théel, Hjalmar', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);