function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bakken, Torkild', 2],
    ['Bonyadi-Naeini, Alieh & Rastegar-Pouyani, Nasrullah', 3],
    ['Conde-Vela, Víctor M.', 9],
    ['Conde-Vela, Víctor Manuel', 3],
    ['Costa, Dimitri de Araujo & Dolbeth, Marina & Prata, Jessica', 1],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 2],
    ['Glasby, Christopher J.', 3],
    ['Hadiyanto, Hadiyanto', 2],
    ['Hsueh, Pan-Wen', 4],
    ['Kinberg, Johan Gustaf Hjalmar', 1],
    ['Razmi Shah, Raz Shauqeena Batrisyea & Ibrahim, Yusof Shuaib', 1],
    ['Tasso, Vicente & El Haddad, Mustapha & Assadi, Carolina', 1],
    ['Villalobos-Guerrero, Tulio F. & Idris, Izwandy', 2],
    ['Yousefi, Shetav & Rahimian, Hasan & Nabavi, Seid Mohammad Bagher', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);