function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Booysen, Ruan & Haddad, Charles R.', 22],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 4],
    ['Chatzaki, Maria & Keer, Johan Van', 2],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 4],
    ['Crespo, Luis C. & Boieiro, Mario & Cardoso, Pedro', 2],
    ['Dean, David Allen', 16],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 2],
    ['Esyunin, S. L. & Kazantsev, D. K', 4],
    ['Haddad, Charles R. & Bosmans, Robert', 3],
    ['Isaia, Marco & Paschetta, Mauro & Chiarle, Alberto', 4],
    ['Marjan Komnenov & Eva Pitta & Konstantina Zografou', 3],
    ['Marusik, Yuri M. & Koponen, Seppo', 4],
    ['Marusik, Yuri M. & Omelko, Mikhail M.', 3],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 9],
    ['Polchaninova, N. & Gnelitsa, V. & Terekhova, V. & Iosypchuk, A.', 2],
    ['Other (18)', 19]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=103)',
    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);