function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arias, Elizabeth T.', 1],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 2],
    ['Douglas, Hume B.', 3],
    ['Erichson, Guil. W. F.', 1],
    ['Ghahari, Hassan & Packova, Gabriela & Platia, Giuseppe', 7],
    ['Girard, Claude', 2],
    ['Gulpercin, N. & Tezcan, S.', 15],
    ['Nasserzadeh, Hiva', 2],
    ['Nasserzadeh, Hiva & Platia, Giuseppe & Parsi, Farzaneh', 2],
    ['Németh, T. & Platia, G.', 13],
    ['Németh, Tamás', 10],
    ['Platia, Giuseppe & Ghahari, Hassan', 32],
    ['Prosvirov, Alexander S. & Efimov, Dmitry A.', 2],
    ['Stefanelli, Silvia & Della Rocca, Francesca & Bogliani, Giuseppe', 2],
    ['Zapata de la Vega, José Luis & Sánchez-Ruiz, Antonio', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=99)',
    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);