function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ananjeva, Natalia B. & Milto, Konstantin D.', 4],
    ['Barabanov, Andrei V. & Doronin, Igor V.', 2],
    ['Conradie, Werner & Branch, William R. & Watson, Gillian', 1],
    ['Eskandarzadeh, Naeimeh & Rastegar-Pouyani, Nasrullah', 5],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 1],
    ['Jablonski, Daniel & Khalili, Faizurrahman & Masroor, Rafaqat', 1],
    ['Jablonski, Daniel & Regan, John M. & Holzheuser, Chace', 2],
    ['Masroor, Rafaqat & Khan, Muazzam Ali & Nadeem, Muhammad Sajid', 3],
    ['Masroor, Rafaqat & Khisroon, Muhammad & Khan, Muazzam Ali', 1],
    ['Mozaffari, Omid & Ahmadzadeh, Faraham & Parham, James F.', 1],
    ['Mozaffari, Omid & Ahmadzadeh, Faraham & Saberi-Pirooz, Reihaneh', 2],
    ['Orlova, Valentina F. & Poyarkov, Nikolay A.', 1],
    ['Orlova, Valentina F. & Rasegar-Pouyani, Eskandar', 2],
    ['Oskyrko, Oleksandra & Jablonski, Daniel', 1],
    ['Šmíd, Jiří & Moravec, Jiří & Kodym, Petr & Kratochvíl, Lukáš', 20],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    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);