function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ananjeva, Natalia B. & Milto, Konstantin D.', 1],
    ['Bailon, Salvador', 1],
    ['Bailon, Salvador & Aouraghe, Hassan', 1],
    ['Barabanov, Andrei & Milto, Konstantin', 3],
    ['Eskandarzadeh, Naeimeh & Rastegar-Pouyani, Nasrullah', 1],
    ['Flores-Villela, Oscar & Ríos-Muñoz, César A.', 2],
    ['Jablonski, Daniel & Khalili, Faizurrahman & Masroor, Rafaqat', 1],
    ['Masroor, Rafaqat', 1],
    ['Ma‛ayan Lev, Dani Nadel, Mina Weinstein-Evron & Reuven Yeshurun', 1],
    ['Poyarkov, Nikolai', 2],
    ['Šmíd, Jiří & Moravec, Jiří & Kodym, Petr & Kratochvíl, Lukáš', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);