function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Khazali, Azhar Mohammed & Kachel, Hamid Saeid', 1],
    ['Bolzern, Angelo & Burckhardt, Daniel & Hänggi, Ambros', 59],
    ['Bolzern, Angelo & Crespo, Luís & Cardoso, Pedro', 3],
    ['Bolzern, Angelo & Hervé, Christophe', 1],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 2],
    ['Dean, David Allen', 2],
    ['Deltshev, Christo', 1],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 10],
    ['Dimitrov, Dragomir', 1],
    ['Isaia, Marco & Paschetta, Mauro & Chiarle, Alberto', 4],
    ['Kaya, Rahsen S. & Kunt, Kadir B. & Marusik, Yuri M.', 24],
    ['Kovblyuk, Mykola M. & Ponomarev, Alexandr V.', 1],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 3],
    ['Robert Bosmans', 2],
    ['Zamani, Alireza & Darvishnia, Hamid & Marusik, Yuri M.', 3],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=123)',
    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);