function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barrientos, Jose A. & Prieto, Carlos E. & Pina, Silvia', 1],
    ['Bayram, Abdullah & Kunt, Kadir Bogaç & Yağmur, Ersen Aydın', 1],
    ['Chaib, Salma & Kherbouche-Abrous, Ourida & Beladjal, Lynda', 3],
    ['Chatzaki, Maria & Arnedo, Miquel A.', 2],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 5],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 2],
    ['Dimitrov, Dragomir & Deltshev, Christo & Lazarov, Stoian', 2],
    ['Guecel, Salih & Charalambidou, Iris & Goecmen, Bayram', 2],
    ['Hernández-Corral, Jesús', 4],
    ['Kunt, Kadir Bogac & Elverici, Mert & Oezkuetuek, Recep Sulhi', 2],
    ['Kunt, Kadir Boğaç & Özkütük, Recep Sulhi', 6],
    ['Marjan Komnenov & Eva Pitta & Konstantina Zografou', 4],
    ['Oezkuetuek, Recep Sulhi & Elverici, Mert & Marusik, Yuri M.', 2],
    ['Zamani, Alireza & Marusik, Yuri M.', 8],
    ['Řezáč, Milan & Cardoso, Pedro & Řezáčová, Veronika', 18],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=76)',
    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);